Add --config option to the build-tool.

Remove comments from HTML.
Upgrade GA tag (analytics.js) to the latest tag (gtag.js)
2025-12-18 21:53:26 +00:00 · 2020-10-12 14:19:01 +08:00 · 2020-10-12 14:18:02 +08:00 · 2020-10-12 06:19:11 +08:00 · 2020-10-10 20:18:24 +08:00 · 2020-10-10 18:08:29 +08:00
59 changed files with 1598 additions and 1498 deletions
--- a/.github/CODE_OF_CONDUCT.md
+++ b/.github/CODE_OF_CONDUCT.md
@@ -11,8 +11,7 @@ appearance, race, religion, or sexual identity and orientation.

 ## Our Standards

-Examples of behavior that contributes to creating a positive environment
-include:
+Examples of behavior that contributes to creating a positive environment include:

 * Using welcoming and inclusive language
 * Being respectful of differing viewpoints and experiences
@@ -22,12 +21,10 @@ include:

 Examples of unacceptable behavior by participants include:

-* The use of sexualized language or imagery and unwelcome sexual attention or
- advances
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
 * Trolling, insulting/derogatory comments, and personal or political attacks
 * Public or private harassment
-* Publishing others' private information, such as a physical or electronic
- address, without explicit permission
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
 * Other conduct which could reasonably be considered inappropriate in a
 professional setting

@@ -55,7 +52,7 @@ further defined and clarified by project maintainers.
 ## Enforcement

 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at cotes.chung@gmail.com. All
+reported by contacting the project team at `cotes.chung@gmail.com`. All
 complaints will be reviewed and investigated and will result in a response that
 is deemed necessary and appropriate to the circumstances. The project team is
 obligated to maintain confidentiality with regard to the reporter of an incident.
@@ -68,9 +65,9 @@ members of the project's leadership.
 ## Attribution

 This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
+available at <https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>

 For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+<https://www.contributor-covenant.org/faq>
+
+[homepage]: https://www.contributor-covenant.org
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -7,15 +7,9 @@ To ensure that the blog design is not confused, this project does not accept sug
 Generally, contribute to the project by:

 1. Fork this project on GitHub and clone it locally.
-2. Create a new branch named `feature/my-feature` (or `feature/fix-a-bug`), which branch from `develop`:
-
-    ```console
-    $ git checkout -b feature/<my-feature> develop
-    ```
-    > Please note that the new branch name must include the prefix `feature/`.
-
+2. Create a new branch from `master` and give it a descriptive name (e.g., `my-new-feature`, `fix-a-bug`).
 3. After completing the development, commit and push to remote.
-4. Submit a new **pull request** to the `develop` branch of upstream, i.e., `cotes2020/jekyll-theme-chirpy:develop`.
+4. Submit a new pull request.

 ---

--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -4,7 +4,8 @@ about: Create a report to help us improve
 labels: bug
 ---

-<!-- Note: Please follow the template to open a new issue, otherwise your question will probably be ignored. -->
+<!-- Note: Please follow the template to open a new issue, otherwise your question will probably be ignored. If you are new to Jekyll or Github Pages, you may be misreporting bugs. When you are not sure if this is a bug, choose to the `Question` type instead. -->
+

 ## Checklist
 <!-- Please complete the following list of tasks, and then check it by change the "[ ]" to "[x]" -->
@@ -12,11 +13,10 @@ labels: bug
 - [ ] There are no similar reports on existing issues (including closed ones).
 - [ ] I found the bug on the latest code of `master` branch.

-
 ## Describe the bug
 <!-- A clear and concise description of what the bug is. -->

-**To Reproduce**
+### To Reproduce

 Steps to reproduce the behavior:

@@ -25,25 +25,29 @@ Steps to reproduce the behavior:
 3. Scroll down to '....'
 4. See error

-
-**Expected behavior**
+### Expected behavior
 <!-- A clear and concise description of what you expected to happen. -->

-**Screenshots**
+### Screenshots
 <!-- If applicable, add screenshots to help explain your problem. -->

-**Desktop**
+### Software
 <!-- Please complete the following information -->
- - OS: [e.g. iOS]
- - Browser: [e.g. chrome, safari]
- - Version: [e.g. 22]
+- Ruby version: [by running: `ruby -v`]
+- Gem version: [by running: `gem -v`]
+- Bundler version: [by running: `bundle -v`]
+- Jekyll version: [by running: `bundle list | grep " jekyll "`]

-**Smartphone**
+### Desktop
+<!-- Please complete the following information -->
+- OS: [e.g. macOS 10.15.6]
+- Browser: [e.g. Chrome 85.0.4183.83 (Official Build) (64-bit)]
+
+### Smartphone
 <!-- please complete the following information -->
- - Device: [e.g. iPhone6]
- - OS: [e.g. iOS8.1]
- - Browser: [e.g. stock browser, safari]
- - Version: [e.g. 22]
+- Device: [e.g. iPhone 6]
+- OS: [e.g. iOS 13.6.1]
+- Browser: [e.g. Chrome 22]

-**Additional context**
+### Additional context
 <!-- Add any other context about the problem here. -->
--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -11,7 +11,7 @@ labels: enhancement
 - [ ] I have read the [contributing guidelines](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/.github/CONTRIBUTING.md).
 - [ ] There are no similar request on existing issues (including closed ones).
 - [ ] I have read the [project progress](https://github.com/cotes2020/jekyll-theme-chirpy/projects) and know the current progress of the project.
- [ ] I was in the `develop` branch of the latest code.
+- [ ] I was in the `master` branch of the latest code.


 ## Is your feature request related to a problem? Please describe
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -16,7 +16,7 @@ Please select the desired item checkbox and change it to "[x]", then delete opti
 - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
 - [ ] Documentation update

-## How has this been tested?
+## How has this been tested

 <!-- 
 Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration
@@ -25,16 +25,15 @@ Please describe the tests that you ran to verify your changes. Provide instructi
 - [ ] I have run `bash ./tools/build.sh && bash ./tools/test.sh` (at the root of the project) locally and passed
 - [ ] I have tested this feature in the browser

-**Test Configuration**
+### Test Configuration

-* Browerser type & version:
-* Operating system:
-* Bundler version:
-* Ruby version:
-* Jekyll version:
+- Browerser type & version:
+- Operating system:
+- Bundler version:
+- Ruby version:
+- Jekyll version:

-
-## Checklist:
+### Checklist
 <!-- Select checkboxes by change the "[ ]" to "[x]" -->
 - [ ] My code follows the [Google style guidelines](https://google.github.io/styleguide/)
 - [ ] I have performed a self-review of my own code
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,6 +1,8 @@
 name: 'Continuous Integration'
 on:
  push:
+    branches-ignore:
+      - 'production'
    tags-ignore:
      - '*'
    paths-ignore:
@@ -13,7 +15,7 @@ on:
      - 'LICENSE'
  pull_request:
    paths:
-      - "**"
+      - '**'

 jobs:
  ci:
@@ -27,6 +29,20 @@ jobs:
        with:
          ruby-version: '2.6.x'

+      - name: Install tools (for Ubuntu)
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CC86BB64
+          sudo add-apt-repository ppa:rmescandon/yq
+          sudo apt update
+          sudo apt install yq -y
+
+      - name: Install tools (for macOS)
+        if: matrix.os == 'macos-latest'
+        run: |
+          brew install coreutils
+          brew install yq
+
      - name: Checkout
        uses: actions/checkout@v2
        with:
@@ -41,11 +57,6 @@ jobs:
          restore-keys: |
            ${{ runner.os }}-gems-

-      - name: Install GNU-Coreutils(for macOS)
-        if: runner.os == 'macOS'
-        run: |
-          brew install coreutils
-
      - name: Bundle config
        run: |
          bundle config path vendor/bundle
--- a/.github/workflows/pages-deploy.yml.hook
+++ b/.github/workflows/pages-deploy.yml.hook
@@ -0,0 +1,81 @@
+name: 'Automatic build'
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - .gitignore
+      - README.md
+      - LICENSE
+
+jobs:
+  continuous-delivery:
+
+    runs-on: ubuntu-latest
+
+    env:
+      GEMS_PATH: /tmp/bundle
+
+    steps:
+      - uses: actions/setup-ruby@v1
+        with:
+          ruby-version: 2.6.x
+
+      - name: Install tools
+        run: |
+          sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CC86BB64
+          sudo add-apt-repository ppa:rmescandon/yq
+          sudo apt update
+          sudo apt install yq -y
+
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Bundle Caching
+        id: bundle-cache
+        uses: actions/cache@v1
+        with:
+          path: ${{ env.GEMS_PATH }}
+          key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile') }}
+          restore-keys: |
+            ${{ runner.os }}-gems-
+
+      - name: Bundle config
+        run: |
+          bundle config path ${{ env.GEMS_PATH }}
+
+      - name: Bundle Install
+        if: steps.bundle-cache.outputs.cache-hit != 'true'
+        run: |
+          bundle install
+
+      - name: Bundle Install locally
+        if: steps.bundle-cache.outputs.cache-hit == 'true'
+        run: |
+          bundle install --local
+
+      - name: Check baseurl
+        run: |
+          baseurl="$(grep '^baseurl:' _config.yml | yq r - baseurl)"
+          if [[ -n $baseurl ]]; then
+            echo "SPEC_TEST=_site_no_baseurl" >> $GITHUB_ENV
+          fi
+
+      - name: Build Site
+        run: |
+          bash tools/build.sh
+
+          if [[ -n $SPEC_TEST ]]; then
+            # Bypass the defects of htmlproofer
+            bash tools/build.sh -b "" -d "$SPEC_TEST"
+          fi          
+
+      - name: Test Site
+        run: |
+          bash tools/test.sh "$SPEC_TEST"
+
+      - name: Deploy
+        run: |
+          bash tools/deploy.sh
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,8 +12,11 @@ install:

 addons:
  apt:
+    sources:
+      - sourceline: "ppa:rmescandon/yq"
    packages:
-    - libcurl4-openssl-dev # required to avoid SSL error (for htmlproofer)
+      - libcurl4-openssl-dev # required to avoid SSL error (for htmlproofer)
+      - yq

 script:
  - >-
@@ -23,7 +26,7 @@ script:
  - bash _cibuild.sh

 branches:
-  only: master
+  only: production

 git:
  depth: false # for posts lastmod
@@ -40,4 +43,4 @@ notifications:

 env:
  global:
-    - NOKOGIRI_USE_SYSTEM_LIBRARIES=true # speeds up installation of html-proofer
+    - NOKOGIRI_USE_SYSTEM_LIBRARIES=true # speeds up installation of html-proofer
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 🌏 English • [简体中文](docs/README_zh-CN.md)

 [![Build Status](https://github.com/cotes2020/jekyll-theme-chirpy/workflows/build/badge.svg?branch=master&event=push)](https://github.com/cotes2020/jekyll-theme-chirpy/actions?query=branch%3Amaster+event%3Apush)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/8220b926db514f13afc3f02b7f884f4b)](https://app.codacy.com/manual/cotes2020/jekyll-theme-chirpy?utm_source=github.com&utm_medium=referral&utm_content=cotes2020/jekyll-theme-chirpy&utm_campaign=Badge_Grade_Dashboard)
 [![GitHub license](https://img.shields.io/github/license/cotes2020/jekyll-theme-chirpy.svg)](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE)
 [![996.icu](https://img.shields.io/badge/link-996.icu-%23FF4D5B.svg)](https://996.icu)

@@ -12,251 +13,191 @@ A minimal, sidebar, responsive web design Jekyll theme, focusing on text present

 ## Table of Contents

-* [Features](#features)
-* [Installing](#installing)
-* [Usage](#usage)
-* [Contributing](#contributing)
-* [Credits](#credits)
-* [Support](#support)
-* [License](#license)
+- [Features](#features)
+- [Installation](#installation)
+- [Usage](#usage)
+- [Contributing](#contributing)
+- [Credits](#credits)
+- [Support](#support)
+- [License](#license)

 ## Features

-* Pinned Posts
-* Configurable theme mode
-* Double-level Categories
-* Last modified date for posts
-* Table of Contents
-* Automatically recommend related posts
-* Syntax highlighting
-* Mathematical expressions
-* Search
-* Atom Feeds
-* Disqus Comments
-* Google Analytics
-* GA Pageviews reporting (Advanced)
-* SEO and Performance Optimization
+- Pinned Posts
+- Configurable theme mode
+- Double-level Categories
+- Last modified date for posts
+- Table of Contents
+- Automatically recommend related posts
+- Syntax highlighting
+- Mathematical expressions
+- Search
+- Atom Feeds
+- Disqus Comments
+- Google Analytics
+- GA Pageviews reporting (Advanced)
+- SEO and Performance Optimization

-## Installing
+## Installation

-### Prerequisites
+[Fork **Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork) on GitHub, rename the repository to `USERNAME.github.io` (where `USERNAME` is your GitHub username), and then open terminal and clone the fork to local by:

-Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of basic environment (`Ruby`, `RubyGems` and `Bundler`). 
-
-To improve the writing experience, we need to use some script tools. If your machine is running Debian or macOS, make sure that [GNU coreutils](https://www.gnu.org/software/coreutils/) is installed. Otherwise, install by:
-
-* Debian
-
-  ```console
-  $ sudo apt-get install coreutils
-  ```
-
-* macOS
-
-  ```console
-  $ brew install coreutils
-  ```
-
-
-### Jekyll Plugins
-
-[Fork **Chirpy** from GitHub](https://github.com/cotes2020/jekyll-theme-chirpy/fork), then clone your forked repo to local:
-
-```console
-$ git clone git@github.com:USER/jekyll-theme-chirpy.git -b master
+```terminal
+$ git clone https://github.com/USERNAME/USERNAME.github.io.git -b master --single-branch
 ```

-And replace the `USER` above to your GitHub username.
+### Setting up the local envrionment

-The first time you run or build the project on local machine, perform the installation of Jekyll plugins. Go to the root of repo and run:
+If you would like to run or build the project on your local machine, please follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of `Ruby`, `RubyGems` and `Bundler`. 
+
+Before running or building for the first time, please complete the installation of the Jekyll plugins. Go to the root directory of project and run:

 ```terminal
 $ bundle install
 ```

-`bundle` will automatically install all the dependent Jekyll Plugins that listed in the `Gemfile`.
+`bundle` will automatically install all the dependencies specified by `Gemfile`.

+In order to generate some extra files (_categories_, _tags_ and _last modified list_), we need to use some tool scripts. And they require dependency package [yq](https://github.com/mikefarah/yq#install) to be installed. What's more, if your machine is running Debian or macOS, you also need to install [GNU coreutils](https://www.gnu.org/software/coreutils/).
+
+- on Debian:
+
+  ```console
+  $ sudo apt-get install coreutils
+  ```
+
+- on macOS:
+
+  ```console
+  $ brew install coreutils
+  ```
+
+### Setting up Docker environment (optional)
+
+If you're a loyal fan of [**Docker**](https://www.docker.com/) or just too lazy to install the packages mentioned in [_Setting up the local envrionment_](#setting-up-the-local-envrionment), please make sure you have **Docker Engine** installed and running, and then get Docker image `jekyll/jekyll` from Docker Hub by the following command:
+
+```console
+$ docker pull jekyll/jekyll:latest
+```

 ## Usage

+Running [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/) requires some extra files, which cannot be generated by Jekyll native commands, so please strictly follow the methods mentioned below to run or deploy your website.

-### Directory Structure
+### Initialization

-The main files and related brief introductions are listed below:
+Go to the root directory of the project and start initialization:

-```sh
-jekyll-theme-chirpy/
-├── _data
-├── _includes      
-├── _layouts
-├── _posts          # posts stay here
-├── _scripts
-├── .travis.yml     # remove it
-├── .github         # remove this, too
-├── assets      
-├── tabs
-│   └── about.md    # the ABOUT page
-├── .gitignore
-├── 404.html
-├── Gemfile
-├── LICENSE
-├── README.md
-├── _config.yml     # configuration file
-├── tools           # script tools
-├── docs
-├── feed.xml
-├── index.html
-├── robots.txt
-└── sitemap.xml
+```console
+$ bash tools/init.sh
 ```

+> **Note**: If you not intend to deploy it on GitHub Pages, append parameter option `--no-gh` at the end of the above command.

-As mentioned above, some files or directories should be removed from your repo:
+What it does is:

-```terminal
-$ rm -rf .travis.yml .github _posts/* 
-```
+1. Remove some files or directories from your repository:

+    - `.travis.yml`
+    - files under `_posts`
+    - folder `docs`
+
+2. If you use the `--no-gh` option, the directory `.github` will be deleted. Otherwise, setup the GitHub Action workflow by removing extension `.hook` of `.github/workflows/pages-deploy.yml.hook`, and then remove the other files and directories in folder `.github`. 
+
+3. Automatically create a commit to save the changes.

 ### Configuration

 Generally, go to `_config.yml` and configure the variables as needed. Some of them are typical options:

-* `url`
-	
-	Set to your website url and there should be no slash symbol at the tail. Format: `<protocol>://<domain>`.
+- `url`
+- `avatar`
+- `timezone`
+- `theme_mode`

+### Run Locally

-* `avatar`
-    
-    It defines the image file location of avatar. The sample image is `/assets/img/sample/avatar.jpg`, and should be replaced by your own one(a square image). Notice that a huge image file will increase the load time of your site, so keep your avatar image size as small as possible(may be *<https://tinypng.com/>* will help).
-
-* `timezone`
-
-    To ensure that the posts' release date matches the city you live in, please modify the field `timezone` correctly. A list of all available values can be found on [TimezoneConverter](http://www.timezoneconverter.com/cgi-bin/findzone/findzone) or [Wikipedia](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones).
-
-* `theme_mode`
-  
-	There are three options for the theme color scheme:
-	
-	- **dual** 	- The default color scheme will follow the system settings, but if the system does not support dark mode, or the browser does not support `Media Queries Level 5`, the theme will be displayed as `light` mode by default. Anyway, the bottom left corner of the Sidebar will provide a button for users to switch color schemes.
-
-	- **dark**	- Always show dark mode.
-	- **light**	- Always show light mode.
-
-
-###  Run Locally
-
-You may want to preview the site content before publishing, so just run the script tool:
+You may want to preview the site contents before publishing, so just run it by:

 ```terminal
 $ bash tools/run.sh
 ```

-Open a modern browser and visit at <http://localhost:4000>.
+Then open a browser and visit to <http://localhost:4000>.

-Few days later, you may find that the file modification(e.g. edits to a post) does not refresh in real time by using `run.sh`. Don't worry, the advanced option `-r` (or `--realtime`) will solve this problem, but it requires [**fswatch**](http://emcrisostomo.github.io/fswatch/) to be installed on your machine. Type `-h` for more information.
+Few days later, you may find that the file changes does not refresh in real time by using `run.sh`. Don't worry, the advanced option `-r` (or `--realtime`) will solve this problem, but it requires [**fswatch**](http://emcrisostomo.github.io/fswatch/) to be installed on your machine.

-###  Deploying to GitHub Pages
+### Run on Docker

-Before the deployment begins, checkout the file `_config.yml` and make sure that the `url` has been configured. What's more, if you prefer the [Project site on GitHub](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and also use the default domain `<username>.github.io`, remember to change the `baseurl` to your project name that starting with a slash. For example, `/project`.
-
-#### Option 1: Built by GitHub Pages
-
-By deploying the site in this way, you're allowed to push the source code directly to the remote.
-
-> **Note**: If you want to use any third-party Jekyll plugins that not on [this list](https://pages.github.com/versions/), stop reading the current approach and go to [*Option 2: Build locally*](#option-2-build-locally).
-
-**1**. Rename the repository to:
-
-|Site Type | Repo's Name|
-|:---|:---|
-|User or Organization | `<username>.github.io`|
-|Project| Any one except `<username>.github.io`, let's say `project`|
-
-**2**. Commit the changes of the repo first, then run the publish script:
-
-```console
-$ bash tools/publish.sh
-```
-
-> Please note that the *Recent Update* list requires the latest git-log date of posts, thus make sure the changes in `_posts` have been committed before running this command.
-
-it will automatically generates the *Latest Modified Date* and *Categories / Tags* page for the posts and submit a commit, and then push to `origin/master`. Its output is similar to the following log:
+Run the site on Docker with the following command:

 ```terminal
-[INFO] Success to update lastmod for 4 post(s).
-[INFO] Succeed! 3 category-pages created.
-[INFO] Succeed! 4 tag-pages created.
-[INFO] Published successfully!
+$ docker run --rm -it \
+    --volume="$PWD:/srv/jekyll" \
+    -p 4000:4000 jekyll/jekyll \
+    bash tools/run.sh --docker
 ```

-**3**. Go to GitHub website and enable GitHub Pages service for the repo.
+Please note that on Docker containers, you'll lose the real-time refresh feature.

-**4**. Check it out:
+### Deployment

-|Site Type | Site URL |
-|:---|:---|
-|User or Organization | `https://<username>.github.io/`|
-|Project| `https://<username>.github.io/project/`|
+Before the deployment begins, checkout the file `_config.yml` and make sure the `url` is configured correctly. Furthermore, if you prefer the [_project site_](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and don't use a custom domain, or you want to visit your website with a base url on a web server other than **GitHub Pages**, remember to change the `baseurl` to your project name that starting with a slash. For example, `/project`.

+Assuming you have already gone through the [initialization](#initialization), you can now choose ONE of the following methods to deploy your website.

-#### Option 2: Build Locally
+#### Deploy on GitHub Pages

-For security reasons, GitHub Pages runs on `safe` mode, which means the third-party Jekyll plugins or custom scripts won't work. If you want to use any other plugin that not on the [whitelist](https://pages.github.com/versions/), **you have to generate the site locally rather than on GitHub Pages**.
+For security reasons, GitHub Pages build runs on `safe` mode, which restricts us from using tool scripts to generate additional page files. Therefore, we can use **GitHub Actions** to build the site, store the built site files on a new branch, and use that branch as the source of the Pages service.

-**1**. Browse to GitHub website, create a brand new repo named: 
+1. Push any commit to `origin/master` to trigger the GitHub Actions workflow. Once the build is complete and successful, a new remote branch named `gh-pages` will appear to store the built site files.

-|Site Type | Repo's Name|
-|:---|:---|
-|User or Organization | `<username>.github.io`|
-|Project| Any one except `<username>.github.io`, let's say `project`|
+2. Browse to your repository on GitHub and choose the branch `gh-pages` as the [publishing source](https://docs.github.com/en/github/working-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site) throught _Settings_ → _Options_ → _GitHub Pages_:
+    ![gh-pages-sources](https://raw.githubusercontent.com/cotes2020/jekyll-theme-chirpy/master/assets/img/sample/gh-pages-sources.png)

-and clone it.
+3. Visit your website at the address indicated by GitHub.

-**2**. In the root of the source project, build your site by:
+#### Deploy on Other Platforms
+
+On platforms other than GitHub, we cannot enjoy the convenience of **GitHub Actions**. Therefore, we should build the site locally (or on some other 3rd-party CI platform) and then put the site files on the server.
+
+Go to the root of the source project, build your site by:

 ```console
-$ bash tools/build.sh -d /path/to/local/project/
+$ bash tools/build.sh
 ```

-The generated static files will be placed in the root of `/path/to/local/project`. Commit and push the changes to the `master` branch on GitHub.
+> **Note**: The output path can be specified with the option `-d`.

-**3**. Go to GitHub website and enable Pages service for the new repository.
+Or, build the site with Docker by:

-**4**. Visit at:
-
-|Site Type | Site URL |
-|:---|:---|
-|User or Organization | `https://<username>.github.io/`|
-|Project| `https://<username>.github.io/project/`|
-
-#### Finishing work
-
-No matter which way you choose to deploy the website on GitHub, please enforce the `HTTPS` for it. See official docs: [Securing your GitHub Pages site with HTTPS](https://help.github.com/en/github/working-with-github-pages/securing-your-github-pages-site-with-https).
+```terminal
+$ docker run --rm -it \
+    --volume="$PWD:/srv/jekyll" \
+    jekyll/jekyll \
+    bash tools/build.sh --docker
+```

+Unless you specified the output path, the generated site files will be placed in folder `_site` of the project's root directory. Now you should upload those files to your web server.

 ### Documentation

-For more details and the better reading experience, please check out the [tutorial in demo site](https://chirpy.cotes.info/categories/tutorial/). In the meanwhile, a copy of the tutorial is also available on the [Wiki](https://github.com/cotes2020/jekyll-theme-chirpy/wiki).
+For more details and the better reading experience, please check out the [tutorials on demo site](https://chirpy.cotes.info/categories/tutorial/). In the meanwhile, a copy of the tutorial is also available on the [Wiki](https://github.com/cotes2020/jekyll-theme-chirpy/wiki).

 ## Contributing

 The old saying, "Two heads are better than one." Consequently, welcome to report bugs, improve code quality or submit a new feature. For more information, see [contributing guidelines](.github/CONTRIBUTING.md).

-
 ## Credits

-This theme is mainly built with [Jekyll](https://jekyllrb.com/) ecosystem, [Bootstrap](https://getbootstrap.com/), [Font Awesome](https://fontawesome.com/) and some other wonderful tools(their copyright information can be found in the relevant files).
-
-:tada:Thanks to all the volunteers who contributed to this project, their GitHub IDs are on [this list](https://github.com/cotes2020/jekyll-theme-chirpy/graphs/contributors). Also, I won't forget those guys who submitted the issues or unmerged PR because they reported bugs, shared ideas or inspired me to write more readable documentation.
+This theme is mainly built with [Jekyll](https://jekyllrb.com/) ecosystem, [Bootstrap](https://getbootstrap.com/), [Font Awesome](https://fontawesome.com/) and some other wonderful tools (their copyright information can be found in the relevant files).

+:tada: Thanks to all the volunteers who contributed to this project, their GitHub IDs are on [this list](https://github.com/cotes2020/jekyll-theme-chirpy/graphs/contributors). Also, I won't forget those guys who submitted the issues or unmerged PR because they reported bugs, shared ideas or inspired me to write more readable documentation.

 ## Support

-If you enjoy this theme or find it helpful, please consider becoming my sponsor, I'd really appreciate it! Click the button <kbd>:heart:Sponsor</kbd> at the top of the [Home Page](https://github.com/cotes2020/jekyll-theme-chirpy) and choose a link that suits you to donate; this will encourage and help me better maintain the project.
-
+If you enjoy this theme or find it helpful, please consider becoming my sponsor, I'd really appreciate it! Click the button <kbd>:heart: Sponsor</kbd> at the top of the [Home Page](https://github.com/cotes2020/jekyll-theme-chirpy) and choose a link that suits you to donate; this will encourage and help me better maintain the project.

 ## License

-This work is published under [MIT](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE) License.
+This work is published under [MIT](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE) License.
--- a/_config.yml
+++ b/_config.yml
@@ -168,10 +168,8 @@ sass:

 compress_html:
  clippings: all
-  comments: ["<!-- ", " -->"]
-  endings: [html, head, body, dt, dd, rt, rp,
-            optgroup, option, colgroup, caption,
-            thead, tbody, tfoot, tr, td, th]
+  comments: all
+  endings: all
  profile: false
  blanklines: false
  ignore:
--- a/_includes/disqus.html
+++ b/_includes/disqus.html
@@ -7,8 +7,10 @@
  MIT License
 -->

-<div id="disqus" class="pt-2 pb-4">
-  <p class="font-italic text-center text-muted small">Comments powered by <a href="https://disqus.com/">Disqus</a>.</p>
+<div id="disqus" class="pt-2 pb-2">
+  <p class="font-italic text-center text-muted small">
+    Comments powered by <a href="https://disqus.com/">Disqus</a>.
+  </p>
 </div>

 <script src="{{ site.baseurl }}/assets/js/lib/jquery.disqusloader.min.js"></script>
--- a/_includes/fixlinenos.html
+++ b/_includes/fixlinenos.html
@@ -1,12 +0,0 @@
-<!--
-  Fixed kramdown code highlight rendering:
-  https://github.com/penibelst/jekyll-compress-html/issues/101
-  https://github.com/penibelst/jekyll-compress-html/issues/71#issuecomment-188144901
-->
-{% if include.content contains '<pre class="highlight">' %}
-  {% assign content = include.content | replace: '<pre class="highlight"><code', '<code' %}
-  {% assign content = content | replace: '</code></pre>', '</code>' %}
-  {{ content }}
-{% else %}
-  {{ include.content }}
-{% endif %}
--- a/_includes/google-analytics.html
+++ b/_includes/google-analytics.html
@@ -5,12 +5,12 @@
  © 2017-2019 Cotes Chung
  MIT License
 -->
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id={{ site.google_analytics.id }}"></script>
 <script>
-  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
-  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
-  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
-
-  ga('create', '{{ site.google_analytics.id }}', 'auto');
-  ga('send', 'pageview');
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  
+  gtag('js', new Date());
+  gtag('config', '{{ site.google_analytics.id }}');
 </script>
--- a/_includes/js-selector.html
+++ b/_includes/js-selector.html
@@ -35,7 +35,11 @@
 {% endif %}


-<!-- PWA -->
 {% if jekyll.environment == 'production' %}
+
+  {% include google-analytics.html %}
+
+  <!-- PWA -->
  <script src="{{ '/app.js' | relative_url }}" defer></script>
+
 {% endif %}
--- a/_includes/refactor-content.html
+++ b/_includes/refactor-content.html
@@ -0,0 +1,27 @@
+<!--
+  Refactor the HTML structure.
+-->
+
+{% assign _content = include.content %}
+
+<!--
+  Suroundding the markdown table with '<div class="table-wrapper">. and '</div>'
+-->
+{% if _content contains '<table>' %}
+  {% assign _content = _content | replace: '<table>', '<div class="table-wrapper"><table>' %}
+  {% assign _content = _content | replace: '</table>', '</table></div>' %}
+  {% assign _content = _content | replace: '</table></div></code>', '</table></code>' %}
+{% endif %}
+
+
+<!--
+  Fixed kramdown code highlight rendering:
+  https://github.com/penibelst/jekyll-compress-html/issues/101
+  https://github.com/penibelst/jekyll-compress-html/issues/71#issuecomment-188144901
+-->
+{% if _content contains '<pre class="highlight">' %}
+  {% assign _content = _content | replace: '<div class="highlight"><pre class="highlight"><code', '<div class="highlight"><code' %}
+  {% assign _content = _content | replace: '</code></pre></div>', '</code></div>' %}
+{% endif %}
+
+{{ _content }}
--- a/_includes/related-posts.html
+++ b/_includes/related-posts.html
@@ -84,7 +84,7 @@


 {% if index_list.size > 0 %}
-  <div id="related-posts" class="mt-4 mb-2 mb-sm-4 pb-2">
+  <div id="related-posts" class="mt-5 mb-2 mb-sm-4">
    <h3 class="pt-2 mt-1 mb-4 ml-1" data-toc-skip>{{ site.data.label.post.relate_posts }}</h3>
    <div class="card-deck mb-4">
    {% for entry in index_list %}
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -36,7 +36,7 @@ layout: compress
    <div id="main-wrapper">
      <div id="main">

-        {% include fixlinenos.html content=content %}
+        {% include refactor-content.html content=content %}

        {% include footer.html %}

@@ -52,12 +52,8 @@ layout: compress
      <i class="fas fa-angle-up"></i>
    </a>

-    {% if jekyll.environment == 'production' %}
-      {% include google-analytics.html %}
-    {% endif %}
-
    {% include search-loader.html %}

  </body>

-</html>
+</html>
--- a/_layouts/home.html
+++ b/_layouts/home.html
@@ -9,7 +9,7 @@ layout: page


 {% assign pinned = site.posts | where_exp: "item", "item.pin == true"  %}
-{% assign default = site.posts | where_exp: "item", "item.pin == nil "  %}
+{% assign default = site.posts | where_exp: "item", "item.pin != true"  %}
 {% assign posts = "" | split: "" %}

 <!-- Get pinned posts -->
@@ -51,7 +51,7 @@ layout: page
  <div class="post-preview">
    <div class="d-flex justify-content-between pr-xl-2">
      <h1><a href="{{ post.url | relative_url }}">{{ post.title }}</a></h1>
-      {% if post.pin %}
+      {% if post.pin == true %}
        <i class="fas fa-thumbtack fa-fw text-muted mt-1 ml-2 mt-xl-2" data-toggle="tooltip" data-placement="left"
        title="Pinned"></i>
      {% endif %}
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -61,12 +61,19 @@ layout: default
      </div> <!-- .post-meta -->

      <div class="post-content">
+
+        {%- capture img_placehodler -%}
+          data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
+        {% endcapture%}
+
        {% if page.image %}
-          <img src="{{ page.image }}">
+          <img src="{{ img_placehodler }}" data-src="{{ page.image }}" class="post-preview-img">
        {% endif %}
+
        <!-- Using lozad. See: <https://github.com/ApoorvSaxena/lozad.js#usage> -->
        {% if content contains '<img src=' %}
-          {{ content | replace: '<img src=', '<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src=' }}
+          {% assign replacement = '<img src="' | append: img_placehodler | append: '" data-src=' %}
+          {{ content | replace: '<img src=', replacement }}
        {% else %}
          {{ content }}
        {% endif %}
@@ -99,7 +106,7 @@ layout: default
        {% endif %}

        <div class="post-tail-bottom
-          d-flex justify-content-between align-items-center pt-5 pb-2">
+          d-flex justify-content-between align-items-center mt-3 pt-5 pb-2">
          {% if site.data.rights.license %}
          <div class="license-wrapper">
            This post is licensed under
@@ -116,6 +123,7 @@ layout: default

    </div> <!-- .post -->

+
  </div> <!-- #post-wrapper -->

  {% include panel.html %}
@@ -123,21 +131,20 @@ layout: default
 </div> <!-- .row -->

 <div class="row">
-  <div id="post-extend-wrapper" class="col-12 col-lg-11 col-xl-8">
+  <div class="col-12 col-lg-11 col-xl-8">
+    <div id="post-extend-wrapper" class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-md-4 pr-md-4">

-    <div class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-md-4 pr-md-4">
+    {% include related-posts.html %}

-      {% include post-nav.html %}
+    {% include post-nav.html %}

-      {% if site.disqus.comments and page.comments %}
-        {% include disqus.html %}
-      {% endif %}
+    {% if site.disqus.comments and page.comments %}
+      {% include disqus.html %}
+    {% endif %}

-      {% include related-posts.html %}
+    </div> <!-- #post-extend-wrapper -->

-    </div> <!-- .pl-1 pr-1 -->
-
-  </div> <!-- #post-extend-wrapper -->
+  </div> <!-- .col-* -->

 </div> <!-- .row -->

--- a/_posts/2019-08-08-text-and-typography.md
+++ b/_posts/2019-08-08-text-and-typography.md
@@ -5,22 +5,25 @@ date: 2019-08-08 11:33:00 +0800
 categories: [Blogging, Demo]
 tags: [typography]
 math: true
+image: /assets/img/sample/devices-mockup.png
 ---

-This Jekyll template totally compatible with Markdown syntax. Now, let's take a look for the text and typography in here.
+This post is to show Markdown syntax rendering on [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork), you can also use it as an example of writing. Now, let's start looking at text and typography.
+

 ## Titles

-***
+---
+
 # H1

 <h2 data-toc-skip>H2</h2>

 <h3 data-toc-skip>H3</h3>

-#### H4
+<h4>H4</h4>

-***
+---

 ## Paragraph

@@ -36,17 +39,33 @@ Beside the lake, beneath the trees,

 Fluttering and dancing in the breeze.

+## List
+
+### Ordered list
+
+1. first item
+2. second item
+3. third item
+
+### Unordered list
+
+- item 1
+	- sub item 1
+	- sub item 2
+
+- item 2
+
 ## Block Quote

 > This line to shows the Block Quote.

 ## Tables

-|Company|Contact|Country|
-|:---|:--|---:|
-|Alfreds Futterkiste | Maria Anders | Germany
-|Island Trading | Helen Bennett | UK
-|Magazzini Alimentari Riuniti | Giovanni Rovelli | Italy
+| Company                      | contact          | Country |
+|:-----------------------------|:-----------------|--------:|
+| Alfreds Futterkiste          | Maria Anders     | Germany |
+| Island Trading               | Helen Bennett    | UK      |
+| Magazzini Alimentari Riuniti | Giovanni Rovelli | Italy   |

 ## Link

@@ -58,10 +77,33 @@ Fluttering and dancing in the breeze.
 Click the hook will locate the footnote[^footnote].


-## Image
+## Images

-![Desktop View]({{ "/assets/img/sample/mockup.png" | relative_url }})
+By default, the image is centered and the image caption can be displayed at the bottom:

+![Desktop View](/assets/img/sample/mockup.png)
+_Full screen width and center alignment_
+
+You can change the size of the picture:
+
+![Desktop View](/assets/img/sample/mockup.png){: width="400"}
+_400px image width_
+
+In addition, you can use class `normal` , `left` and `right` to specify the image position (but in these case, the image caption is prohibited), for example:
+
+- Normal position
+  
+  ![Desktop View](/assets/img/sample/mockup.png){: width="350" class="normal"}
+
+- Float to the left
+
+  ![Desktop View](/assets/img/sample/mockup.png){: width="240" class="left"}
+  "A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space."
+
+- Float to the right
+
+  ![Desktop View](/assets/img/sample/mockup.png){: width="240" class="right"}
+  "A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space. A repetitive and meaningless text is used to fill the space."

 ## Inline code

--- a/_posts/2019-08-08-write-a-new-post.md
+++ b/_posts/2019-08-08-write-a-new-post.md
@@ -8,7 +8,7 @@ tags: [writing]

 ## Naming and Path

-Create a new file named with the format `YYYY-MM-DD-title.md` then put it into `_post` of the root directory.
+Create a new file named `YYYY-MM-DD-TITLE.EXTENSION` and put it in the `_post/` of the root directory. Please note that the `EXTENSION` must be one of `md` and `markdown`. From `v2.4.1`, you can create sub-directories under `_posts/` to categorize posts.

 ## Front Matter

@@ -33,23 +33,24 @@ In order to accurately record the release date of a post, you should not only se

 The `categories` of each post is designed to contain up to two elements, and the number of elements in `tags` can be zero to infinity.

-The list of posts belonging to the same category/tag is recorded on a separate page. The number of such *category*/*tag* type pages is equal to the number of `categories`/`tags` for all posts, they must match perfectly. 
+The list of posts belonging to the same *category*/*tag* is recorded on a separate page. At the same time, the number of these *category*/*tag* type pages is equal to the number of `categories` / `tags` elements for all posts, which means that the two number must be exactly the same.
+
+For instance, let's say there is a post with front matter:

-let's say there is a post with front matter:
 ```yaml
 categories: [Animal, Insect]
 tags: bee
 ```

-then we should have two *category* type pages placed in folder `categories` of root and one *tag* type page placed in folder `tags`  of root:
+Then we should have two *category* type pages placed in folder `categories` of root and one *tag* type page placed in folder `tags`  of root:

-```terminal
-jekyll-theme-chirpy
+```sh
+.
 ├── categories
-│   ├── animal.html
+│   ├── animal.html         # a category type page
 │   └── insect.html
 ├── tags
-│   └── bee.html
+│   └── bee.html            # a tag type page
 ...
 ```
    
@@ -73,11 +74,11 @@ tag: TAG_NAME               # e.g. bee
 ---
 ```

-With the increasing number of posts, the number of categories and tags will increase several times!  If we still manually create these *category*/*tag* type files, it will obviously be a super time-consuming job, and it is very likely to miss some of them(i.e. when you click on the missing `category` or `tag` link from a post or somewhere, it will complain to you '404'). The good news is that we got a lovely script tool `_scripts/sh/create_pages.sh` to finish the boring task. Basically we will use it via `tools/publish.sh` instead of running it separately. Check out its use case [here]({{ "/posts/getting-started/#option-1-built-by-github-pages" | relative_url }}).
+With the increasing number of posts, the number of categories and tags will increase several times!  If we still manually create these *category*/*tag* type files, it will obviously be a super time-consuming job, and it is very likely to miss some of them, i.e., when you click on the missing `category` or `tag` link from a post or somewhere, the browser will complain to you "404 Not Found". The good news is we got a lovely script tool `_scripts/sh/create_pages.sh` to finish the boring tasks. Basically we will use it through `run.sh`, `build.sh` or `deploy.sh` that placed in `tools/` instead of running it separately. Check out its use case [here]({{ "/posts/getting-started/#deployment" | relative_url }}).

 ## Last modified date
-    
-The last modified date of a post is obtained according to its latest git commit date, and all the modified date of the posts should be stored in `_data/updates.yml`. For example:
+
+The last modified date of a post is obtained according to the post's latest git commit date, and the modified date of all posts are designed to be stored in the file `_data/updates.yml`. Then contents of that file may be as follows:

 ```yaml
 -
@@ -87,13 +88,13 @@ The last modified date of a post is obtained according to its latest git commit
  ... 
 ```

-You can choose to create this file manually, but as you may notice, the better approach is to let it be automatically generated by a tool script. And `_scripts/sh/dump_lastmod.sh` was born for this! Similar to the another script `_scripts/sh/create_pages.sh` mentioned above, it is also be called from `tools/publish.sh`, so it doesn't have to be used separately.
+You can choose to create this file manually, But the better approach is to let it be automatically generated by a script tool, and `_scripts/sh/dump_lastmod.sh` was born for this! Similar to the other script (`create_pages.sh`) mentioned above, it is also be called from the other superior tools, so it doesn't have to be used separately.

-When some posts have been modified since their published date and also the file `_data/updates.yml` was created correctly, a list with the label **Recent Updates** will be displayed in the right panel of the desktop view, which records the five most recently modified articles.
+When some posts have been modified since their published date and also the file `_data/updates.yml` was created correctly, a list with the label **Recent Updates** will be displayed in the right panel of the desktop view, which records the five most recently modified posts.

 ## Table of Contents

-By default, the **T**able **o**f **C**ontents (TOC) is displayed on the right panel of the post. If you want to turn it off globally, go to `_config.yml` and set the variable `toc` to `false`. If you want to turn off TOC for specific post, add the following to post's [Front Matter](https://jekyllrb.com/docs/front-matter/):
+By default, the **T**able **o**f **C**ontents (TOC) is displayed on the right panel of the post. If you want to turn it off globally, go to `_config.yml` and set the value of variable `toc` to `false`. If you want to turn off TOC for specific post, add the following to post's [Front Matter](https://jekyllrb.com/docs/front-matter/):

 ```yaml
 ---
@@ -123,6 +124,15 @@ math: true
 ---
 ```

+## Preview Image
+
+If you want to add an image to the top of the post contents, specify the url for the image by:
+
+```yaml
+---
+image: /path/to/image-file
+---
+```

 ## Pinned Posts

@@ -134,7 +144,6 @@ pin: true
 ---
 ```

-
 ## Code Block

 Markdown symbols <code class="highlighter-rouge">```</code> can easily create a code block as following examples.
@@ -145,7 +154,7 @@ This is a common code snippet, without syntax highlight and line number.

 ## Specific Language

-Using <code class="highlighter-rouge">```Language</code> you will get code snippets with line Numbers and syntax highlight.
+Using <code class="highlighter-rouge">```language</code> you will get code snippets with line numbers and syntax highlight.

 > **Note**: The Jekyll style `{% raw %}{%{% endraw %} highlight LANGUAGE {% raw %}%}{% endraw %}` or `{% raw %}{%{% endraw %} highlight LANGUAGE linenos {% raw %}%}{% endraw %}` are not allowed to be used in this theme !

@@ -158,7 +167,7 @@ items:
      quantity:  4
 ```

-#### Liquid Codes
+### Liquid Codes

 If you want to display the **Liquid** snippet, surround the liquid code with `{% raw %}{%{% endraw %} raw {%raw%}%}{%endraw%}` and `{% raw %}{%{% endraw %} endraw {%raw%}%}{%endraw%}` .

@@ -170,7 +179,6 @@ If you want to display the **Liquid** snippet, surround the liquid code with `{%
 ```
 {% endraw %}

-
 ## Learn More

 For more knowledge about Jekyll posts, visit the [Jekyll Docs: Posts](https://jekyllrb.com/docs/posts/).
--- a/_posts/2019-08-09-getting-started.md
+++ b/_posts/2019-08-09-getting-started.md
@@ -7,194 +7,145 @@ tags: [getting started]
 pin: true
 ---

-## Prerequisites

-Follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of basic environment (`Ruby`, `RubyGems` and `Bundler`). 
+## Installation

-To improve the writing experience, we need to use some script tools. If your machine is running Debian or macOS, make sure that [GNU coreutils](https://www.gnu.org/software/coreutils/) is installed. Otherwise, install by:
+[Fork **Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork) on GitHub, rename the repository to `USERNAME.github.io` (where `USERNAME` is your GitHub username), and then open terminal and clone the fork to local by:

-* Debian
-
-  ```console
-  $ sudo apt-get install coreutils
-  ```
-
-* macOS
-
-  ```console
-  $ brew install coreutils
-  ```
-
-
-## Jekyll Plugins
-
-[Fork **Chirpy** from GitHub](https://github.com/cotes2020/jekyll-theme-chirpy/fork), then clone your forked repo to local:
-
-```console
-$ git clone git@github.com:USER/jekyll-theme-chirpy.git -b master
+```terminal
+$ git clone https://github.com/USERNAME/USERNAME.github.io.git -b master --single-branch
 ```

-And replace the `USER` above to your GitHub username.
+### Setting up the local envrionment

-The first time you run or build the project on local machine, perform the installation of Jekyll plugins. Go to the root of repo and run:
+If you would like to run or build the project on your local machine, please follow the [Jekyll Docs](https://jekyllrb.com/docs/installation/) to complete the installation of `Ruby`, `RubyGems` and `Bundler`. 
+
+Before running or building for the first time, please complete the installation of the Jekyll plugins. Go to the root directory of project and run:

 ```terminal
 $ bundle install
 ```

-`bundle` will automatically install all the dependent Jekyll Plugins that listed in the `Gemfile`.
+`bundle` will automatically install all the dependencies specified by `Gemfile`.

+In order to generate some extra files (_categories_, _tags_ and _last modified list_), we need to use some tool scripts. And they require dependency package [yq](https://github.com/mikefarah/yq#install) to be installed. What's more, if your machine is running Debian or macOS, you also need to install [GNU coreutils](https://www.gnu.org/software/coreutils/).

-## Directory Structure
+- on Debian:

-The main files and related brief introductions are listed below:
+  ```console
+  $ sudo apt-get install coreutils
+  ```

-```sh
-jekyll-theme-chirpy/
-├── _data
-├── _includes      
-├── _layouts
-├── _posts          # posts stay here
-├── _scripts
-├── .travis.yml     # remove it
-├── .github         # remove this, too
-├── assets      
-├── tabs
-│   └── about.md    # the ABOUT page
-├── .gitignore
-├── 404.html
-├── Gemfile
-├── LICENSE
-├── README.md
-├── _config.yml     # configuration file
-├── tools           # script tools
-├── feed.xml
-├── index.html
-├── robots.txt
-└── sitemap.xml
+- on macOS:
+
+  ```console
+  $ brew install coreutils
+  ```
+
+### Setting up Docker environment (optional)
+
+If you're a loyal fan of [**Docker**](https://www.docker.com/) or just too lazy to install the packages mentioned in [_Setting up the local envrionment_](#setting-up-the-local-envrionment), please make sure you have **Docker Engine** installed and running, and then get Docker image `jekyll/jekyll` from Docker Hub by the following command:
+
+```console
+$ docker pull jekyll/jekyll:latest
 ```

+## Usage

-As mentioned above, some files or directories should be removed from your repo:
+Running [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/) requires some extra files, which cannot be generated by Jekyll native commands, so please strictly follow the methods mentioned below to run or deploy your website.

-```terminal
-$ rm -rf .travis.yml .github _posts/* 
+### Initialization
+
+Go to the root directory of the project and start initialization:
+
+```console
+$ bash tools/init.sh
 ```

-## Configuration
+> **Note**: If you not intend to deploy it on GitHub Pages, append parameter option `--no-gh` at the end of the above command.
+
+What it does is:
+
+1. Remove some files or directories from your repository:
+
+    - `.travis.yml`
+    - files under `_posts`
+    - folder `docs`
+
+2. If you use the `--no-gh` option, the directory `.github` will be deleted. Otherwise, setup the GitHub Action workflow by removing extension `.hook` of `.github/workflows/pages-deploy.yml.hook`, and then remove the other files and directories in folder `.github`. 
+
+3. Automatically create a commit to save the changes.
+
+### Configuration

 Generally, go to `_config.yml` and configure the variables as needed. Some of them are typical options:

-* `url`
-    
-    Set to your website url and there should be no slash symbol at the tail. Format: `<protocol>://<domain>`.
+- `url`
+- `avatar`
+- `timezone`
+- `theme_mode`

+### Run Locally

-* `avatar`
-    
-    It defines the image file location of avatar. The sample image is `/assets/img/sample/avatar.jpg`, and should be replaced by your own one (a square image). Notice that a huge image file will increase the load time of your site, so keep your avatar image size as small as possible (may be *<https://tinypng.com/>* will help).
-
-* `timezone`
-
-    To ensure that the posts' release date matches the city you live in, please modify the field `timezone` correctly. A list of all available values can be found on [TimezoneConverter](http://www.timezoneconverter.com/cgi-bin/findzone/findzone) or [Wikipedia](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones).
-
-* `theme_mode`
-  
-    There are three options for the theme color scheme:
-    
-    - **dual**  - The default color scheme will follow the system settings, but if the system does not support dark mode, or the browser does not support `Media Queries Level 5`, the theme will be displayed as `light` mode by default. Anyway, the bottom left corner of the Sidebar will provide a button for users to switch color schemes.
-
-    - **dark**  - Always show dark mode.
-    - **light** - Always show light mode.
-
-
-##  Run Locally
-
-You may want to preview the site content before publishing, so just run the script tool:
+You may want to preview the site contents before publishing, so just run it by:

 ```terminal
 $ bash tools/run.sh
 ```

-Open a browser and visit <http://localhost:4000>.
+Then open a browser and visit to <http://localhost:4000>.

 Few days later, you may find that the file changes does not refresh in real time by using `run.sh`. Don't worry, the advanced option `-r` (or `--realtime`) will solve this problem, but it requires [**fswatch**](http://emcrisostomo.github.io/fswatch/) to be installed on your machine.

-##  Deploying to GitHub Pages
+### Run on Docker

-Before the deployment begins, checkout the file `_config.yml` and make sure that the `url` has been configured. What's more, if you prefer the [Project site on GitHub](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and also use the default domain `<username>.github.io`, remember to change the `baseurl` to your project name that starting with a slash. For example, `/project`.
-
-
-### Option 1: Built by GitHub Pages
-
-By deploying the site in this way, you're allowed to push the source code directly to the remote.
-
-> **Note**: If you want to use any third-party Jekyll plugins that not on [this list](https://pages.github.com/versions/), stop reading the current approach and go to [*Option 2: Build locally*](#option-2-build-locally).
-
-**1**. Rename the repository to:
-
-|Site Type | Repo's Name|
-|:---|:---|
-|User or Organization | `<username>.github.io`|
-|Project| Any one except `<username>.github.io`, let's say `project`|
-
-**2**. Commit the changes of the repo first, then run the publish script:
-
-```console
-$ bash tools/publish.sh
-```
-
-> Please note that the *Recent Update* list requires the latest git-log date of posts, thus make sure the changes in `_posts` have been committed before running this command.
-
-it will automatically generates the *Latest Modified Date* and *Categories / Tags* page for the posts and submit a commit, and then push to `origin/master`. Its output is similar to the following log:
+Run the site on Docker with the following command:

 ```terminal
-[INFO] Success to update lastmod for 4 post(s).
-[INFO] Succeed! 3 category-pages created.
-[INFO] Succeed! 4 tag-pages created.
-[INFO] Published successfully!
+$ docker run --rm -it \
+    --volume="$PWD:/srv/jekyll" \
+    -p 4000:4000 jekyll/jekyll \
+    bash tools/run.sh --docker
 ```

-**3**. Go to GitHub website and enable GitHub Pages service for the repo.
+Please note that on Docker containers, you'll lose the real-time refresh feature.

-**4**. Check it out:
+### Deployment

-|Site Type | Site URL |
-|:---|:---|
-|User or Organization | `https://<username>.github.io/`|
-|Project| `https://<username>.github.io/project/`|
+Before the deployment begins, checkout the file `_config.yml` and make sure the `url` is configured correctly. Furthermore, if you prefer the [_project site_](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites) and don't use a custom domain, or you want to visit your website with a base url on a web server other than **GitHub Pages**, remember to change the `baseurl` to your project name that starting with a slash. For example, `/project`.

+Assuming you have already gone through the [initialization](#initialization), you can now choose ONE of the following methods to deploy your website.

-### Option 2: Build Locally
+#### Deploy on GitHub Pages

-For security reasons, GitHub Pages runs on `safe` mode, which means the third-party Jekyll plugins or custom scripts won't work. If you want to use any other plugin that not on the [whitelist](https://pages.github.com/versions/), **you have to generate the site locally rather than on GitHub Pages**.
+For security reasons, GitHub Pages build runs on `safe` mode, which restricts us from using tool scripts to generate additional page files. Therefore, we can use **GitHub Actions** to build the site, store the built site files on a new branch, and use that branch as the source of the Pages service.

-**1**. Browse to GitHub website, create a brand new repo named: 
+1. Push any commit to `origin/master` to trigger the GitHub Actions workflow. Once the build is complete and successful, a new remote branch named `gh-pages` will appear to store the built site files.

-|Site Type | Repo's Name|
-|:---|:---|
-|User or Organization | `<username>.github.io`|
-|Project| Any one except `<username>.github.io`, let's say `project`|
+2. Browse to your repository on GitHub and choose the branch `gh-pages` as the [publishing source](https://docs.github.com/en/github/working-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site) throught _Settings_ → _Options_ → _GitHub Pages_:
+    ![gh-pages-sources](/assets/img/sample/gh-pages-sources.png){: width="650" class="normal"}

-and clone it.
+3. Visit your website at the address indicated by GitHub.

-**2**. In the root of the source project, build your site by:
+#### Deploy on Other Platforms
+
+On platforms other than GitHub, we cannot enjoy the convenience of **GitHub Actions**. Therefore, we should build the site locally (or on some other 3rd-party CI platform) and then put the site files on the server.
+
+Go to the root of the source project, build your site by:

 ```console
-$ bash tools/build.sh -d /path/to/local/project/
+$ bash tools/build.sh
 ```

-The generated static files will be placed in the root of `/path/to/local/project`. Commit and push the changes to the `master` branch on GitHub.
+> **Note**: The output path can be specified with the option `-d`.

-**3**. Go to GitHub website and enable Pages service for the new repository.
+Or, build the site with Docker by:

-**4**. Visit at:
+```terminal
+$ docker run --rm -it \
+    --volume="$PWD:/srv/jekyll" \
+    jekyll/jekyll \
+    bash tools/build.sh --docker
+```

-|Site Type | Site URL |
-|:---|:---|
-|User or Organization | `https://<username>.github.io/`|
-|Project| `https://<username>.github.io/project/`|
-
-### Finishing work
-
-No matter which way you choose to deploy the website on GitHub, please enforce the `HTTPS` for it. See official docs: [Securing your GitHub Pages site with HTTPS](https://help.github.com/en/github/working-with-github-pages/securing-your-github-pages-site-with-https).
+Unless you specified the output path, the generated site files will be placed in folder `_site` of the project's root directory. Now you should upload those files to your web server.
--- a/_posts/2019-08-11-customize-the-favicon.md
+++ b/_posts/2019-08-11-customize-the-favicon.md
@@ -11,11 +11,11 @@ In [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/), the image fi

 With a square image (PNG, JPG or GIF) in hand, open the site [*Favicon & App Icon Generator*](https://www.favicon-generator.org/) and upload your original image.

-![upload-image]({{ "/assets/img/sample/upload-image.png" | relative_url }})
+![upload-image](/assets/img/sample/upload-image.png)

 Click button <kbd>Create Favicon</kbd> and wait a moment for the website to generate the icons of various sizes automatically.

-![download-icons]({{ "/assets/img/sample/download-icons.png" | relative_url }})
+![download-icons](/assets/img/sample/download-icons.png){: width="600"}

 Download the generated package, unzip and delete the following two from the extracted files:

--- a/_scripts/sh/create_pages.sh
+++ b/_scripts/sh/create_pages.sh
@@ -1,4 +1,4 @@
-#!/usr/local/bin/bash
+#!/usr/bin/env bash
 #
 # Create HTML pages for Categories and Tags in posts.
 #
@@ -18,31 +18,34 @@ TYPE_TAG=1
 category_count=0
 tag_count=0

-
 _read_yaml() {
-  local _endline=$(grep -n "\-\-\-" $1 | cut -d: -f 1 | sed -n '2p')
-  head -$_endline $1
+  local _endline="$(grep -n "\-\-\-" "$1" | cut -d: -f 1 | sed -n '2p')"
+  head -"$_endline" "$1"
 }

-
 read_categories() {
-  local _yaml=$(_read_yaml $1)
-  local _categories=$(echo "$_yaml" | grep "^categories:")
-  local _category=$(echo "$_yaml" | grep "^category:")
+  local _yaml="$(_read_yaml "$1")"
+  local _categories="$(echo "$_yaml" | yq r - "categories.*")"
+  local _category="$(echo "$_yaml" | yq r - "category")"

-  if [[ ! -z "$_categories" ]]; then
-    echo "$_categories" | sed "s/categories: *//;s/\[//;s/\].*//;s/, */,/g;s/\"//g;s/'//g"
-  elif [[ ! -z "_category" ]]; then
-    echo "$_category" | sed "s/category: *//;s/\[//;s/\].*//;s/, */,/g;s/\"//g;s/'//g"
+  if [[ -n $_categories ]]; then
+    echo "$_categories"
+  elif [[ -n $_category ]]; then
+    echo "$_category"
  fi
 }

-
 read_tags() {
-  local _yaml=$(_read_yaml $1)
-  echo "$_yaml" | grep "^tags:" | sed "s/tags: *//;s/\[//;s/\].*//;s/, */,/g;s/\"//g;s/'//g"
-}
+  local _yaml="$(_read_yaml "$1")"
+  local _tags="$(echo "$_yaml" | yq r - "tags.*")"
+  local _tag="$(echo "$_yaml" | yq r - "tag")"

+  if [[ -n $_tags ]]; then
+    echo "$_tags"
+  elif [[ -n $_tag ]]; then
+    echo "$_tag"
+  fi
+}

 init() {

@@ -61,44 +64,41 @@ init() {
  mkdir categories tags
 }

-
 create_category() {
-  if [[ ! -z $1 ]]; then
+  if [[ -n $1 ]]; then
    local _name=$1
-    local _filepath="categories/$(echo $_name | sed 's/ /-/g' | awk '{print tolower($0)}').html"
+    local _filepath="categories/$(echo "$_name" | sed 's/ /-/g' | awk '{print tolower($0)}').html"

    if [[ ! -f $_filepath ]]; then
-      echo "---" > $_filepath
-      echo "layout: category" >> $_filepath
-      echo "title: $_name" >> $_filepath
-      echo "category: $_name" >> $_filepath
-      echo "---" >> $_filepath
+      echo "---" > "$_filepath"
+      echo "layout: category" >> "$_filepath"
+      echo "title: $_name" >> "$_filepath"
+      echo "category: $_name" >> "$_filepath"
+      echo "---" >> "$_filepath"

-      ((category_count=category_count+1))
+      ((category_count = category_count + 1))
    fi
  fi
 }

-
 create_tag() {
-  if [[ ! -z $1 ]]; then
+  if [[ -n $1 ]]; then
    local _name=$1
-    local _filepath="tags/$( echo $_name | sed "s/ /-/g;s/'//g" | awk '{print tolower($0)}' ).html"
+    local _filepath="tags/$(echo "$_name" | sed "s/ /-/g;s/'//g" | awk '{print tolower($0)}').html"

    if [[ ! -f $_filepath ]]; then

-      echo "---" > $_filepath
-      echo "layout: tag" >> $_filepath
-      echo "title: $_name" >> $_filepath
-      echo "tag: $_name" >> $_filepath
-      echo "---" >> $_filepath
+      echo "---" > "$_filepath"
+      echo "layout: tag" >> "$_filepath"
+      echo "title: $_name" >> "$_filepath"
+      echo "tag: $_name" >> "$_filepath"
+      echo "---" >> "$_filepath"

-      ((tag_count=tag_count+1))
+      ((tag_count = tag_count + 1))
    fi
  fi
 }

-
 #########################################
 # Create HTML pages for Categories/Tags.
 # Arguments:
@@ -106,43 +106,40 @@ create_tag() {
 #   $2 - type specified option
 #########################################
 create_pages() {
-  if [[ ! -z $1 ]]; then
+  if [[ -n $1 ]]; then
    # split string to array
    IFS_BAK=$IFS
-    IFS=','
+    IFS=$'\n'
    local _string=$1

    case $2 in

      $TYPE_CATEGORY)
-        for i in ${_string#,}; do
-          create_category $i
+        for i in $_string; do
+          create_category "$i"
        done
        ;;

      $TYPE_TAG)
-        for i in ${_string#,}; do
-          create_tag $i
+        for i in $_string; do
+          create_tag "$i"
        done
        ;;

-      *)
-        ;;
+      *) ;;

-      esac
+    esac

-      IFS=$IFS_BAK
+    IFS=$IFS_BAK
  fi

 }

-
 main() {

  init

-  for _file in $(find "_posts" -type f \( -iname \*.md -o -iname \*.markdown \))
-  do
+  for _file in $(find "_posts" -type f \( -iname \*.md -o -iname \*.markdown \)); do
    local _categories=$(read_categories "$_file")
    local _tags=$(read_tags "$_file")

--- a/_scripts/sh/dump_lastmod.sh
+++ b/_scripts/sh/dump_lastmod.sh
@@ -17,7 +17,6 @@ POST_DIR=_posts
 OUTPUT_DIR=_data
 OUTPUT_FILE=updates.yml

-
 _init() {

  if [[ ! -d "$OUTPUT_DIR" ]]; then
@@ -33,10 +32,9 @@ _init() {
  fi
 }

-
 _has_changed() {
-  local _log_count=`git log --pretty=%ad $1 | wc -l | sed 's/ *//'`
-  _log_count=$(($_log_count + 0))
+  local _log_count="$(git log --pretty=%ad "$1" | wc -l | sed 's/ *//')"
+  _log_count=$((_log_count + 0))

  if [[ $_log_count > 1 ]]; then
    return 0 # true
@@ -45,7 +43,6 @@ _has_changed() {
  return 1 # false
 }

-
 ###################################
 # Storage the posts' lastmod.
 #
@@ -56,7 +53,7 @@ _has_changed() {
 #     the file '_data/updates.yml'
 ###################################
 _dump() {
-  local _lasmod="`git log -1 --pretty=%ad --date=iso $2`"
+  local _lasmod="$(git log -1 --pretty=%ad --date=iso "$2")"

  if [[ ! -f "$OUTPUT_DIR/$OUTPUT_FILE" ]]; then
    touch "$OUTPUT_DIR/$OUTPUT_FILE"
@@ -67,20 +64,18 @@ _dump() {
  echo "  lastmod: '$_lasmod'" >> "$OUTPUT_DIR/$OUTPUT_FILE"
 }

-
 main() {

  _init

  local _count=0

-  for _file in $(find ${POST_DIR} -type f \( -iname \*.md -o -iname \*.markdown \))
-  do
-    _filename=$(basename $_file | sed 's/[0-9]\([0-9]*-\)//g;s/\..*//' ) # remove date and extension
+  for _file in $(find ${POST_DIR} -type f \( -iname \*.md -o -iname \*.markdown \)); do
+    _filename="$(basename "$_file" | sed 's/-\-\+/-/;s/[[:digit:]]\([[:digit:]]*-\)//g;s/\..*//')" # remove date and extension

    if _has_changed "$_file"; then
      _dump "$_filename" "$_file"
-      ((_count=_count+1))
+      ((_count = _count + 1))
    fi

  done
@@ -90,5 +85,4 @@ main() {
  fi
 }

-
 main
--- a/_scripts/sh/sync_monitor.sh
+++ b/_scripts/sh/sync_monitor.sh
@@ -15,24 +15,23 @@ if [[ ! -f $1 ]]; then
  exit 0
 fi

-src_dir=`dirname $(realpath $1)`
+src_dir="$(dirname "$(realpath "$1")")"

-dir_prefix="$(realpath $2)/"
+dir_prefix="$(realpath "$2")/"

 related_dir="${src_dir:${#dir_prefix}}"

+dest="$(realpath "$3")/${related_dir}"

-dest="$(realpath $3)/${related_dir}"
-
-if [[ ! -d "$dest" ]]; then
+if [[ ! -d $dest ]]; then
  mkdir -p "$dest"
 fi

-if [[ -f "$1" ]]; then
-  cp $1 $dest
+if [[ -f $1 ]]; then
+  cp "$1" "$dest"
 fi

 if [[ $related_dir == "_posts" ]]; then
-  bash $3/_scripts/sh/create_pages.sh
-  bash $3/_scripts/sh/dump_lastmod.sh
+  bash "$3"/_scripts/sh/create_pages.sh
+  bash "$3"/_scripts/sh/dump_lastmod.sh
 fi
--- a/assets/css/_addon/fonts.scss
+++ b/assets/css/_addon/fonts.scss
@@ -2,7 +2,6 @@
 * The field 'font-display' is added for Google-fonts.
 *
 * See: <https://fonts.google.com/>
- *
 */

-@import url('https://fonts.googleapis.com/css?family=Lato|Roboto+Condensed:400,700|Source+Sans+Pro:400,600,700,900&display=swap');
+@import url('https://fonts.googleapis.com/css2?family=Lato&family=Roboto+Condensed:wght@400;700&family=Source+Sans+Pro:wght@400;600;700;900&display=swap');
--- a/assets/css/_addon/main.scss
+++ b/assets/css/_addon/main.scss
@@ -85,7 +85,6 @@ $sidebar-display: "sidebar-display";
  .site-title {
    text-align: center;
    a {
-      // color: var(--site-title-color);
      font-weight: 900;
      font-size: 1.5rem;
      letter-spacing: .5px;
@@ -106,7 +105,7 @@ $sidebar-display: "sidebar-display";
  }

  .sidebar-bottom {
-    .icon-border+a { // the icon behide mode-toggle
+    .icon-border + a { // the icon behide mode-toggle
      margin-left: .1rem;
    }
  }
@@ -185,7 +184,7 @@ $sidebar-display: "sidebar-display";
      margin-bottom: .5rem; // icons may have multi lines
    }

-    a:hover, #mode-toggle-wrapper>i:hover {
+    a:hover, #mode-toggle-wrapper > i:hover {
      color: #fff;
    }

@@ -211,7 +210,7 @@ $sidebar-display: "sidebar-display";
 } // #sidebar

@media (hover: hover) {
-  #sidebar ul>li:last-child::after {
+  #sidebar ul > li:last-child::after {
    -webkit-transition: top .5s ease;
    -moz-transition: top .5s ease;
    -o-transition: top .5s ease;
@@ -242,7 +241,7 @@ $sidebar-display: "sidebar-display";
    transition: border-color 0.35s ease-in-out;
  }

-  &:hover>a {
+  &:hover > a {
    border-color: #fff;
  }

@@ -448,7 +447,7 @@ $sidebar-display: "sidebar-display";
  @include pl-pr(0);
 }

-#main>div.row:first-child>div {
+#main > div.row:first-child > div {
  &:nth-child(1), &:nth-child(2) {
    margin-top: $topbar-height; /* same as the height of topbar */
  }
@@ -461,11 +460,6 @@ $sidebar-display: "sidebar-display";
 #post-wrapper {
  min-height: calc(100vh - #{$topbar-height}
    - #{$footer-height} - #{$post-extend-min-height})!important;
-  .post-content {
-    a:hover {
-      @extend %link-hover;
-    }
-  }
 }

 #topbar-wrapper.row,
@@ -493,8 +487,7 @@ footer {
    }
  }
  a {
-    @include semi-bold;
-    color: var(---footer-link);
+    color: var(--footer-link);
    &:link {
      @include no-text-decoration;
    }
@@ -545,7 +538,7 @@ footer {


 #access-tags {
-  >div.post-content>div {
+  >div.post-content > div {
    max-width: 80%;
  }
  .post-tag {
@@ -663,7 +656,11 @@ kbd {
 }

 sup {
-  @extend %anchor;
+  z-index: 1;
+  &:target {
+    @extend %anchor;
+    z-index: 0;
+  }
 }

 .footnotes ol {
@@ -677,7 +674,7 @@ sup {
    &:not(:last-child) {
      margin-bottom: -.8rem;
    }
-    &:target>p {
+    &:target > p {
      background-color: var(--footnote-target-bg);
      width: fit-content;
      -webkit-transition: background-color 1.5s ease-in-out;
@@ -694,7 +691,7 @@ sup {
    -webkit-transition: background-color 1.5s ease-in-out; /* Safari prior 6.1 */
    transition: background-color 1.5s ease-in-out;
  }
-  @at-root sup:target>a#{&} {
+  @at-root sup:target > a#{&} {
    background-color: var(--footnote-target-bg);
    padding: 0 2px;
  }
@@ -735,9 +732,14 @@ a {

 } // a

+img {
+  max-width: 100%;
+}
+
 .post {
  h1 {
    margin-top: 3rem;
+    margin-bottom: 1rem;
  }
  em { /* MarkDown italic */
    padding-right: .2rem;
@@ -751,43 +753,41 @@ a {


 /*--- Begin of Markdown table style ---*/
+div.post-content .table-wrapper {
+  overflow-x: auto;

-div.post-content {
-  >table, li>table {
+  >table {
    min-width: 60%;
-    display: block;
    overflow-x: auto;
-    border-collapse: collapse;
    border-spacing: 0;
    margin-bottom: 1.5rem;
+
+    thead {
+      border-bottom: solid 2px rgba(210, 215, 217, 0.75);
+      th {
+        @extend %table-cell;
+      }
+    }
+
+    tbody {
+      tr {
+        &:nth-child(2n) {
+          background-color: var(--tb-even-bg);
+        }
+        &:nth-child(2n + 1) {
+          background-color: var(--tb-odd-bg);
+        }
+        & {
+          border-bottom: 1px solid var(--tb-border-color);
+        }
+        td {
+          @extend %table-cell;
+        }
+      }
+    }
  }
 }

-table {
-  thead {
-    border-bottom: solid 2px rgba(210, 215, 217, 0.75);
-    +tbody tr {
-      &:nth-child(2n) {
-        background-color: var(--tb-even-bg);
-      }
-      &:nth-child(2n + 1) {
-        background-color: var(--tb-odd-bg);
-      }
-      & {
-        border-bottom: 1px solid var(--tb-border-color);
-      }
-    }
-    th {
-      @extend %table-cell;
-    }
-  }
-
-  tbody td {
-    @extend %table-cell;
-  }
-
-} // table
-

 /*--- post ---*/

@@ -815,16 +815,61 @@ table {
  margin-top: 2rem;
  overflow-wrap: break-word;
  word-wrap: break-word;
-  a {
-    @extend %link-color;
-    @extend %link-underline;
-    &:hover {
-      @extend %link-hover;
+
+  @mixin img($caption: false) {
+    >img:not([style]) {
+      margin: .5rem 0;
+
+      &:not(.normal):not(.left):not(.right) {
+        @include align-center;
+
+        @if $caption {
+          @include img-caption;
+        }
+      }
+
+      &.left {
+        float: left;
+        margin: .75rem 1rem 1rem 0;
+      }
+
+      &.right {
+        float: right;
+        margin: .75rem 0 1rem 1rem;
+      }
+
    }
  }
+
+  @mixin img-caption {
+    + em {
+      display: block;
+      text-align: center;
+      font-style: normal;
+      font-size: 80%;
+      padding: 0;
+      color: #6d6c6c;
+    }
+  }
+
+  a {
+    &:not(.img-hyperlink) {
+      @extend %link-color;
+      @extend %link-underline;
+      &:hover {
+        @extend %link-hover;
+      }
+    }
+    &.img-hyperlink {
+      @include img;
+      @include img-caption;
+    }
+  }
+
  p {
    font-size: 1.08rem;
-  }
+    @include img(true);
+  }// p
 }

 .tag:hover {
@@ -930,7 +975,7 @@ table {

  $footer-height: 6rem; // overwrite

-  #main>div.row:first-child>div:first-child {
+  #main > div.row:first-child > div:first-child {
    min-height: calc(100vh - #{$topbar-height} - #{$footer-height});
  }

@@ -943,7 +988,7 @@ table {
    }
  }

-  #avatar>a {
+  #avatar > a {
    width: 5rem;
    height: 5rem;
  }
@@ -953,7 +998,7 @@ table {
  }

  /* table text in small screens */
-  div>table, p~table {
+  div > table, p ~ table {
    width: 100%;
    table-layout: fixed;
    word-wrap: break-word;
@@ -1053,8 +1098,8 @@ table {
    top: 0 !important;
  }

-  #main>div.row:first-child>div:nth-child(1),
-  #main>div.row:first-child>div:nth-child(2) {
+  #main > div.row:first-child > div:nth-child(1),
+  #main > div.row:first-child > div:nth-child(2) {
    margin-top: 0;
  }

@@ -1065,7 +1110,7 @@ table {
  }

  #search-wrapper {
-    &.loaded~a {
+    &.loaded ~ a {
      margin-right: 1rem;
    }
    .fa-times-circle {
@@ -1093,11 +1138,11 @@ table {
    justify-content: center!important;
  }

-  sup {
+  sup:target {
    padding-top: 3.4rem;
  }

-  .footnotes ol>li {
+  .footnotes ol > li {
    padding-top: 3.5rem;
    margin-top: -4.3rem;
    &:first-child {
@@ -1108,7 +1153,7 @@ table {


@media all and (min-width: 577px) and (max-width: 1199px) {
-  footer>.d-flex>div {
+  footer>.d-flex > div {
    width: 312px;
  }
 }
@@ -1149,7 +1194,7 @@ table {
    text-align: left;
  }

-  footer>div.d-flex {
+  footer > div.d-flex {
    width: 92%;
  }

@@ -1186,7 +1231,7 @@ table {
    width: calc(100% - 210px);
  }

-  #search-results>div {
+  #search-results > div {
    max-width: 700px;
  }

@@ -1224,7 +1269,7 @@ table {
    padding: 0;
  }

-  #main>div.row {
+  #main > div.row {
    -webkit-box-pack: center!important;
    -ms-flex-pack: center!important;
    justify-content: center!important;
@@ -1236,7 +1281,7 @@ table {

@media all and (min-width: 1200px) {

-  #main>div.row>div.col-xl-8 {
+  #main > div.row > div.col-xl-8 {
    -webkit-box-flex: 0;
    -ms-flex: 0 0 75%;
    flex: 0 0 75%;
@@ -1267,7 +1312,7 @@ table {
    width: calc(100% - 260px);
  }

-  #search-results>div {
+  #search-results > div {
    max-width: 46%;
    &:nth-child(odd) {
      margin-right: 1.5rem;
@@ -1285,7 +1330,7 @@ table {
    font-size: 1.03rem;
  }

-  footer>div.d-felx {
+  footer > div.d-felx {
    width: 85%;
  }

@@ -1293,7 +1338,7 @@ table {

@media all and (min-width: 1400px) {

-  #main>div.row {
+  #main > div.row {
    padding-left: calc((100% - #{$main-content-max-width}) / 2);
    >div.col-xl-8 {
      max-width: 850px;
@@ -1325,7 +1370,7 @@ table {
    padding-left: 0;
  }

-  #main>div.row>div.col-xl-8 {
+  #main > div.row > div.col-xl-8 {
    padding-left: 0;
    >div:first-child {
      padding-left: .55rem !important;
@@ -1402,7 +1447,7 @@ table {

    ul {
      margin-left: 3%;
-      >li>a {
+      >li > a {
        padding-left: 2.5rem;
        -webkit-box-pack: start!important;
        -ms-flex-pack: start!important;
@@ -1459,7 +1504,7 @@ table {
      }
    } // .sidebar-bottom
  } // #sidebar
-  footer>div.d-flex {
+  footer > div.d-flex {
    width: 87%;
    max-width: 1140px;
  }
@@ -1484,7 +1529,7 @@ table {
    max-width: calc(#{$main-content-max-width} + 20px)
  }

-  #main>div.row {
+  #main > div.row {
    padding-left: calc((100% - #{$main-content-max-width} - 2%) / 2);
  }

@@ -1504,7 +1549,7 @@ table {
 }

@media (min-width: 1920px) {
-  #main>div.row {
+  #main > div.row {
    padding-left: 190px;
  }

--- a/assets/css/_addon/module.scss
+++ b/assets/css/_addon/module.scss
@@ -7,7 +7,7 @@
 * MIT Licensed
 */

-/*---------- scss placeholder ---------*/
+/* ---------- scss placeholder --------- */

 %tag-hover {
  background: var(--tag-hover);
@@ -15,12 +15,12 @@
 }

 %table-cell {
-  padding: .35rem .8rem;
+  padding: 0.4rem 1rem;
  font-size: 95%;
 }

 %link-hover {
-  color: #d2603a!important;
+  color: #d2603a !important;
  border-bottom: 1px solid #d2603a;
  text-decoration: none;
 }
@@ -54,7 +54,7 @@
  margin-top: -2.5rem;
 }

-/*---------- scss mixin ---------*/
+/* ---------- scss mixin --------- */

@mixin no-text-decoration {
  text-decoration: none;
@@ -64,7 +64,7 @@
  color: $color;
  transition: color 0.35s ease-in-out;
  user-select: none;
-  margin: 0 .25rem;
+  margin: 0 0.25rem;
 }

@mixin icon-round($diameter) {
@@ -98,3 +98,11 @@
  font-weight: $font-weight;
  font-family: 'Roboto Condensed', 'Microsoft Yahei', sans-serif;
 }
+
+@mixin align-center {
+  position: relative;
+  left: 50%;
+  -webkit-transform: translateX(-50%);
+  -ms-transform: translateX(-50%);
+  transform: translateX(-50%);
+}
--- a/assets/css/_addon/syntax.scss
+++ b/assets/css/_addon/syntax.scss
@@ -9,8 +9,8 @@
@import "_colors/light-syntax";
@import "_colors/dark-syntax";

-
-html:not([mode]), html[mode=light] {
+html:not([mode]),
+html[mode=light] {
  @include light-syntax;
 }

@@ -19,7 +19,8 @@ html[mode=dark] {
 }

@media (prefers-color-scheme: dark) {
-  html:not([mode]), html[mode=dark] {
+  html:not([mode]),
+  html[mode=dark] {
    @include dark-syntax;
  }

@@ -28,9 +29,9 @@ html[mode=dark] {
  }
 }

-/*-- Codes Snippet --*/
+/* -- Codes Snippet -- */

-%highlight-pre-bg {
+%code-snippet-bg {
  background: var(--highlight-bg-color);
 }

@@ -38,23 +39,38 @@ html[mode=dark] {
  border-radius: 5px;
 }

-.highlighter-rouge {
-  background-color: var(--highlight-bg-color);
+%code-snippet-padding {
+  padding: 0.8rem 1rem;
+}
+
+$code-font-size: 0.85rem;
+
+div > pre {
+  @extend %code-snippet-bg;
  @extend %code-snippet-radius;
+  @extend %code-snippet-padding;
+}
+
+.highlighter-rouge {
+  @extend %code-snippet-bg;
+  @extend %code-snippet-radius;
+
  color: var(--highlighter-rouge-color);
  margin-bottom: 1.2em; /* Override BS Inline-code style */
 }

 .highlight {
  @extend %code-snippet-radius;
-  background: var(--highlight-bg-color);
+  @extend %code-snippet-bg;
+
  @at-root figure#{&} {
-    background: var(--highlight-bg-color);
+    @extend %code-snippet-bg;
  }
+
  overflow: auto;
  .lineno {
-    margin: .8rem 0rem;
-    padding: 0 .5rem;
+    margin: 0.8rem 0;
+    padding: 0 0.5rem;
    min-width: 2.2rem;
    text-align: right;
    color: var(--highlight-lineno-color);
@@ -66,6 +82,12 @@ html[mode=dark] {
    -o-user-select: none;
    user-select: none;
  }
+  pre {
+    margin-bottom: 0;
+    font-size: $code-font-size;
+    line-height: 1.4rem;
+    word-wrap: normal; /* Fixed Safari overflow-x */
+  }
  table {
    padding: 0;
    border: 0;
@@ -78,14 +100,6 @@ html[mode=dark] {
    padding: 0;
    border: 0;
  }
-  pre {
-    margin-bottom: 0;
-    font-size: .85rem;
-    line-height: 1.4rem;
-    word-wrap: normal;
-    /* Fixed Safari overflow-x */
-  }
-
 } //.highlight

 code {
@@ -93,19 +107,24 @@ code {
  -ms-hyphens: none;
  -moz-hyphens: none;
  hyphens: none;
+
  &.highlighter-rouge {
+    font-size: $code-font-size;
    padding: 3px 5px;
-    margin: 0 .15rem;
+    margin: 0 0.15rem;
    border-radius: 4px;
    background-color: var(--inline-code-bg);
  }
-  @at-root a>&.highlighter-rouge {
+
+  @at-root a > &.highlighter-rouge {
    padding-bottom: 0; // show link's underlinke
    color: inherit;
  }
-  @at-root a:hover>&.highlighter-rouge {
+
+  @at-root a:hover > &.highlighter-rouge {
    border-bottom: none;
  }
+
  blockquote &.highlighter-rouge {
    color: inherit;
  }
@@ -126,7 +145,7 @@ div {
      display: none;
    }
    td.rouge-code {
-      padding: .8rem 1rem;
+      @extend %code-snippet-padding;
    }
  }
 }
--- a/assets/css/_addon/variables.scss
+++ b/assets/css/_addon/variables.scss
@@ -7,7 +7,7 @@
 * MIT Licensed
 */

-/*--- ↓ width and height ----*/
+/* --- ↓ width and height ---- */

 $tab-height: 3.3rem;
 $tab-cursor-height: 1.6rem;
--- a/assets/css/_colors/dark-syntax.scss
+++ b/assets/css/_colors/dark-syntax.scss
@@ -7,87 +7,82 @@
 */

@mixin dark-syntax {
-  /* syntax highlight colors from https://raw.githubusercontent.com/jwarby/pygments-css/master/monokai.css */
-  .highlight pre { background-color: #272822; }
-  .highlight .hll { background-color: #272822; }
-  .highlight .c { color: #75715e } /* Comment */
-  .highlight .err { color: #960050; background-color: #1e0010 } /* Error */
-  .highlight .k { color: #66d9ef } /* Keyword */
-  .highlight .l { color: #ae81ff } /* Literal */
-  .highlight .n { color: #f8f8f2 } /* Name */
-  .highlight .o { color: #f92672 } /* Operator */
-  .highlight .p { color: #f8f8f2 } /* Punctuation */
-  .highlight .cm { color: #75715e } /* Comment.Multiline */
-  .highlight .cp { color: #75715e } /* Comment.Preproc */
-  .highlight .c1 { color: #75715e } /* Comment.Single */
-  .highlight .cs { color: #75715e } /* Comment.Special */
-  .highlight .ge { font-style: italic } /* Generic.Emph */
-  .highlight .gs { font-weight: bold } /* Generic.Strong */
-  .highlight .kc { color: #66d9ef } /* Keyword.Constant */
-  .highlight .kd { color: #66d9ef } /* Keyword.Declaration */
-  .highlight .kn { color: #f92672 } /* Keyword.Namespace */
-  .highlight .kp { color: #66d9ef } /* Keyword.Pseudo */
-  .highlight .kr { color: #66d9ef } /* Keyword.Reserved */
-  .highlight .kt { color: #66d9ef } /* Keyword.Type */
-  .highlight .ld { color: #e6db74 } /* Literal.Date */
-  .highlight .m { color: #ae81ff } /* Literal.Number */
-  .highlight .s { color: #e6db74 } /* Literal.String */
-  .highlight .na { color: #a6e22e } /* Name.Attribute */
-  .highlight .nb { color: #f8f8f2 } /* Name.Builtin */
-  .highlight .nc { color: #a6e22e } /* Name.Class */
-  .highlight .no { color: #66d9ef } /* Name.Constant */
-  .highlight .nd { color: #a6e22e } /* Name.Decorator */
-  .highlight .ni { color: #f8f8f2 } /* Name.Entity */
-  .highlight .ne { color: #a6e22e } /* Name.Exception */
-  .highlight .nf { color: #a6e22e } /* Name.Function */
-  .highlight .nl { color: #f8f8f2 } /* Name.Label */
-  .highlight .nn { color: #f8f8f2 } /* Name.Namespace */
-  .highlight .nx { color: #a6e22e } /* Name.Other */
-  .highlight .py { color: #f8f8f2 } /* Name.Property */
-  .highlight .nt { color: #f92672 } /* Name.Tag */
-  .highlight .nv { color: #f8f8f2 } /* Name.Variable */
-  .highlight .ow { color: #f92672 } /* Operator.Word */
-  .highlight .w { color: #f8f8f2 } /* Text.Whitespace */
-  .highlight .mf { color: #ae81ff } /* Literal.Number.Float */
-  .highlight .mh { color: #ae81ff } /* Literal.Number.Hex */
-  .highlight .mi { color: #ae81ff } /* Literal.Number.Integer */
-  .highlight .mo { color: #ae81ff } /* Literal.Number.Oct */
-  .highlight .sb { color: #e6db74 } /* Literal.String.Backtick */
-  .highlight .sc { color: #e6db74 } /* Literal.String.Char */
-  .highlight .sd { color: #e6db74 } /* Literal.String.Doc */
-  .highlight .s2 { color: #e6db74 } /* Literal.String.Double */
-  .highlight .se { color: #ae81ff } /* Literal.String.Escape */
-  .highlight .sh { color: #e6db74 } /* Literal.String.Heredoc */
-  .highlight .si { color: #e6db74 } /* Literal.String.Interpol */
-  .highlight .sx { color: #e6db74 } /* Literal.String.Other */
-  .highlight .sr { color: #e6db74 } /* Literal.String.Regex */
-  .highlight .s1 { color: #e6db74 } /* Literal.String.Single */
-  .highlight .ss { color: #e6db74 } /* Literal.String.Symbol */
-  .highlight .bp { color: #f8f8f2 } /* Name.Builtin.Pseudo */
-  .highlight .vc { color: #f8f8f2 } /* Name.Variable.Class */
-  .highlight .vg { color: #f8f8f2 } /* Name.Variable.Global */
-  .highlight .vi { color: #f8f8f2 } /* Name.Variable.Instance */
-  .highlight .il { color: #ae81ff } /* Literal.Number.Integer.Long */
-
-  .highlight .gh { } /* Generic Heading & Diff Header */
-  .highlight .gu { color: #75715e; } /* Generic.Subheading & Diff Unified/Comment? */
-  .highlight .gd { color: #f92672; background-color: #561c08 } /* Generic.Deleted & Diff Deleted */
-  .highlight .gi { color: #a6e22e; background-color: #0b5858 } /* Generic.Inserted & Diff Inserted */
-
-
-  /*-----  My styles ------*/
-
+  /* -----  My styles ------ */
  --highlight-bg-color: #272822;
  --highlighter-rouge-color: #de6b18;
-
  --highlight-lineno-color: #6c6c6d;
  --highlight-lineno-border-color: #3c4042;
-
  --inline-code-bg: var(--highlight-bg-color);

  .highlight {
    .gp { color: #818c96; }
  }
-  pre { color: #818c96 } /* override Bootstrap */
+
+  pre { color: #818c96; } /* override Bootstrap */
  kbd { background-color: black; }
-}
+
+  /* syntax highlight colors from https://raw.githubusercontent.com/jwarby/pygments-css/master/monokai.css */
+  .highlight pre { background-color: #272822; }
+  .highlight .hll { background-color: #272822; }
+  .highlight .c { color: #75715e; } /* Comment */
+  .highlight .err { color: #960050; background-color: #1e0010; } /* Error */
+  .highlight .k { color: #66d9ef; } /* Keyword */
+  .highlight .l { color: #ae81ff; } /* Literal */
+  .highlight .n { color: #f8f8f2; } /* Name */
+  .highlight .o { color: #f92672; } /* Operator */
+  .highlight .p { color: #f8f8f2; } /* Punctuation */
+  .highlight .cm { color: #75715e; } /* Comment.Multiline */
+  .highlight .cp { color: #75715e; } /* Comment.Preproc */
+  .highlight .c1 { color: #75715e; } /* Comment.Single */
+  .highlight .cs { color: #75715e; } /* Comment.Special */
+  .highlight .ge { font-style: italic; } /* Generic.Emph */
+  .highlight .gs { font-weight: bold; } /* Generic.Strong */
+  .highlight .kc { color: #66d9ef; } /* Keyword.Constant */
+  .highlight .kd { color: #66d9ef; } /* Keyword.Declaration */
+  .highlight .kn { color: #f92672; } /* Keyword.Namespace */
+  .highlight .kp { color: #66d9ef; } /* Keyword.Pseudo */
+  .highlight .kr { color: #66d9ef; } /* Keyword.Reserved */
+  .highlight .kt { color: #66d9ef; } /* Keyword.Type */
+  .highlight .ld { color: #e6db74; } /* Literal.Date */
+  .highlight .m { color: #ae81ff; } /* Literal.Number */
+  .highlight .s { color: #e6db74; } /* Literal.String */
+  .highlight .na { color: #a6e22e; } /* Name.Attribute */
+  .highlight .nb { color: #f8f8f2; } /* Name.Builtin */
+  .highlight .nc { color: #a6e22e; } /* Name.Class */
+  .highlight .no { color: #66d9ef; } /* Name.Constant */
+  .highlight .nd { color: #a6e22e; } /* Name.Decorator */
+  .highlight .ni { color: #f8f8f2; } /* Name.Entity */
+  .highlight .ne { color: #a6e22e; } /* Name.Exception */
+  .highlight .nf { color: #a6e22e; } /* Name.Function */
+  .highlight .nl { color: #f8f8f2; } /* Name.Label */
+  .highlight .nn { color: #f8f8f2; } /* Name.Namespace */
+  .highlight .nx { color: #a6e22e; } /* Name.Other */
+  .highlight .py { color: #f8f8f2; } /* Name.Property */
+  .highlight .nt { color: #f92672; } /* Name.Tag */
+  .highlight .nv { color: #f8f8f2; } /* Name.Variable */
+  .highlight .ow { color: #f92672; } /* Operator.Word */
+  .highlight .w { color: #f8f8f2; } /* Text.Whitespace */
+  .highlight .mf { color: #ae81ff; } /* Literal.Number.Float */
+  .highlight .mh { color: #ae81ff; } /* Literal.Number.Hex */
+  .highlight .mi { color: #ae81ff; } /* Literal.Number.Integer */
+  .highlight .mo { color: #ae81ff; } /* Literal.Number.Oct */
+  .highlight .sb { color: #e6db74; } /* Literal.String.Backtick */
+  .highlight .sc { color: #e6db74; } /* Literal.String.Char */
+  .highlight .sd { color: #e6db74; } /* Literal.String.Doc */
+  .highlight .s2 { color: #e6db74; } /* Literal.String.Double */
+  .highlight .se { color: #ae81ff; } /* Literal.String.Escape */
+  .highlight .sh { color: #e6db74; } /* Literal.String.Heredoc */
+  .highlight .si { color: #e6db74; } /* Literal.String.Interpol */
+  .highlight .sx { color: #e6db74; } /* Literal.String.Other */
+  .highlight .sr { color: #e6db74; } /* Literal.String.Regex */
+  .highlight .s1 { color: #e6db74; } /* Literal.String.Single */
+  .highlight .ss { color: #e6db74; } /* Literal.String.Symbol */
+  .highlight .bp { color: #f8f8f2; } /* Name.Builtin.Pseudo */
+  .highlight .vc { color: #f8f8f2; } /* Name.Variable.Class */
+  .highlight .vg { color: #f8f8f2; } /* Name.Variable.Global */
+  .highlight .vi { color: #f8f8f2; } /* Name.Variable.Instance */
+  .highlight .il { color: #ae81ff; } /* Literal.Number.Integer.Long */
+  .highlight .gu { color: #75715e; } /* Generic.Subheading & Diff Unified/Comment? */
+  .highlight .gd { color: #f92672; background-color: #561c08; } /* Generic.Deleted & Diff Deleted */
+  .highlight .gi { color: #a6e22e; background-color: #0b5858; } /* Generic.Inserted & Diff Inserted */
+}
--- a/assets/css/_colors/dark-typography.scss
+++ b/assets/css/_colors/dark-typography.scss
@@ -26,12 +26,10 @@
  --button-bg: rgb(39, 40, 43);
  --blockquote-border-color: rgb(66, 66, 66);
  --blockquote-text-color: rgb(117, 117, 117);
-
  --btn-border-color: rgb(63, 65, 68);
  --btn-backtotop-color: var(--text-color);
  --btn-backtotop-border-color: var(--btn-border-color);
  --btn-box-shadow: var(--main-wrapper-bg);
-
  --card-header-bg: rgb(51, 50, 50);
  --label-color: rgb(108, 117, 125);

@@ -71,7 +69,6 @@
  --tag-border: rgb(59, 79, 88);
  --tag-shadow: rgb(32, 33, 33);
  --search-tag-bg: var(--tag-bg);
-
  --dash-color: rgb(63, 65, 68);

  /* categories */
@@ -84,7 +81,7 @@
  --timeline-year-dot-color: var(--timeline-color);

  /* Footer */
-  ---footer-link: rgb(146, 146, 146);
+  --footer-link: rgb(171, 171, 171);

  .post-content img {
    filter: brightness(90%);
@@ -98,10 +95,10 @@
  nav[data-toggle=toc] .nav-link.active,
  nav[data-toggle=toc] .nav-link.active:focus,
  nav[data-toggle=toc] .nav-link.active:hover,
-  nav[data-toggle=toc] .nav>li>a:focus,
-  nav[data-toggle=toc] .nav>li>a:hover {
-    color: var(--toc-highlight)!important;
-    border-left-color: var(--toc-highlight)!important;
+  nav[data-toggle=toc] .nav > li > a:focus,
+  nav[data-toggle=toc] .nav > li > a:hover {
+    color: var(--toc-highlight) !important;
+    border-left-color: var(--toc-highlight) !important;
  }

  /* categories */
@@ -126,8 +123,13 @@
  }

  #archives li:nth-child(odd) {
-    background-image: linear-gradient(to left,
-      rgb(26, 26, 30), rgb(39, 39, 45), rgb(39, 39, 45), rgb(39, 39, 45), rgb(26, 26, 30));
+    background-image: linear-gradient(
+      to left,
+      rgb(26, 26, 30),
+      rgb(39, 39, 45),
+      rgb(39, 39, 45),
+      rgb(39, 39, 45),
+      rgb(26, 26, 30));
  }

 } // dark-scheme
--- a/assets/css/_colors/light-syntax.scss
+++ b/assets/css/_colors/light-syntax.scss
@@ -8,73 +8,72 @@

@mixin light-syntax {
  /* see: <https://raw.githubusercontent.com/jwarby/pygments-css/master/github.css> */
-  .highlight .hll { background-color: #ffffcc }
-  .highlight .c { color: #999988; font-style: italic } /* Comment */
-  .highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
-  .highlight .k { color: #000000; font-weight: bold } /* Keyword */
-  .highlight .o { color: #000000; font-weight: bold } /* Operator */
-  .highlight .cm { color: #999988; font-style: italic } /* Comment.Multiline */
-  .highlight .cp { color: #999999; font-weight: bold; font-style: italic } /* Comment.Preproc */
-  .highlight .c1 { color: #999988; font-style: italic } /* Comment.Single */
-  .highlight .cs { color: #999999; font-weight: bold; font-style: italic } /* Comment.Special */
-  .highlight .gd { color: #d01040; background-color: #ffdddd } /* Generic.Deleted */
-  .highlight .ge { color: #000000; font-style: italic } /* Generic.Emph */
-  .highlight .gr { color: #aa0000 } /* Generic.Error */
-  .highlight .gh { color: #999999 } /* Generic.Heading */
-  .highlight .gi { color: #008080; background-color: #ddffdd } /* Generic.Inserted */
-  .highlight .go { color: #888888 } /* Generic.Output */
-  .highlight .gp { color: #555555 } /* Generic.Prompt */
-  .highlight .gs { font-weight: bold } /* Generic.Strong */
-  .highlight .gu { color: #aaaaaa } /* Generic.Subheading */
-  .highlight .gt { color: #aa0000 } /* Generic.Traceback */
-  .highlight .kc { color: #000000; font-weight: bold } /* Keyword.Constant */
-  .highlight .kd { color: #000000; font-weight: bold } /* Keyword.Declaration */
-  .highlight .kn { color: #000000; font-weight: bold } /* Keyword.Namespace */
-  .highlight .kp { color: #000000; font-weight: bold } /* Keyword.Pseudo */
-  .highlight .kr { color: #000000; font-weight: bold } /* Keyword.Reserved */
-  .highlight .kt { color: #445588; font-weight: bold } /* Keyword.Type */
-  .highlight .m { color: #009999 } /* Literal.Number */
-  .highlight .s { color: #d01040 } /* Literal.String */
-  .highlight .na { color: #008080 } /* Name.Attribute */
-  .highlight .nb { color: #0086B3 } /* Name.Builtin */
-  .highlight .nc { color: #445588; font-weight: bold } /* Name.Class */
-  .highlight .no { color: #008080 } /* Name.Constant */
-  .highlight .nd { color: #3c5d5d; font-weight: bold } /* Name.Decorator */
-  .highlight .ni { color: #800080 } /* Name.Entity */
-  .highlight .ne { color: #990000; font-weight: bold } /* Name.Exception */
-  .highlight .nf { color: #990000; font-weight: bold } /* Name.Function */
-  .highlight .nl { color: #990000; font-weight: bold } /* Name.Label */
-  .highlight .nn { color: #555555 } /* Name.Namespace */
-  .highlight .nt { color: #000080 } /* Name.Tag */
-  .highlight .nv { color: #008080 } /* Name.Variable */
-  .highlight .ow { color: #000000; font-weight: bold } /* Operator.Word */
-  .highlight .w { color: #bbbbbb } /* Text.Whitespace */
-  .highlight .mf { color: #009999 } /* Literal.Number.Float */
-  .highlight .mh { color: #009999 } /* Literal.Number.Hex */
-  .highlight .mi { color: #009999 } /* Literal.Number.Integer */
-  .highlight .mo { color: #009999 } /* Literal.Number.Oct */
-  .highlight .sb { color: #d01040 } /* Literal.String.Backtick */
-  .highlight .sc { color: #d01040 } /* Literal.String.Char */
-  .highlight .sd { color: #d01040 } /* Literal.String.Doc */
-  .highlight .s2 { color: #d01040 } /* Literal.String.Double */
-  .highlight .se { color: #d01040 } /* Literal.String.Escape */
-  .highlight .sh { color: #d01040 } /* Literal.String.Heredoc */
-  .highlight .si { color: #d01040 } /* Literal.String.Interpol */
-  .highlight .sx { color: #d01040 } /* Literal.String.Other */
-  .highlight .sr { color: #009926 } /* Literal.String.Regex */
-  .highlight .s1 { color: #d01040 } /* Literal.String.Single */
-  .highlight .ss { color: #990073 } /* Literal.String.Symbol */
-  .highlight .bp { color: #999999 } /* Name.Builtin.Pseudo */
-  .highlight .vc { color: #008080 } /* Name.Variable.Class */
-  .highlight .vg { color: #008080 } /* Name.Variable.Global */
-  .highlight .vi { color: #008080 } /* Name.Variable.Instance */
-  .highlight .il { color: #009999 } /* Literal.Number.Integer.Long */
+  .highlight .hll { background-color: #ffffcc; }
+  .highlight .c { color: #999988; font-style: italic; } /* Comment */
+  .highlight .err { color: #a61717; background-color: #e3d2d2; } /* Error */
+  .highlight .k { color: #000000; font-weight: bold; } /* Keyword */
+  .highlight .o { color: #000000; font-weight: bold; } /* Operator */
+  .highlight .cm { color: #999988; font-style: italic; } /* Comment.Multiline */
+  .highlight .cp { color: #999999; font-weight: bold; font-style: italic; } /* Comment.Preproc */
+  .highlight .c1 { color: #999988; font-style: italic; } /* Comment.Single */
+  .highlight .cs { color: #999999; font-weight: bold; font-style: italic; } /* Comment.Special */
+  .highlight .gd { color: #d01040; background-color: #ffdddd; } /* Generic.Deleted */
+  .highlight .ge { color: #000000; font-style: italic; } /* Generic.Emph */
+  .highlight .gr { color: #aa0000; } /* Generic.Error */
+  .highlight .gh { color: #999999; } /* Generic.Heading */
+  .highlight .gi { color: #008080; background-color: #ddffdd; } /* Generic.Inserted */
+  .highlight .go { color: #888888; } /* Generic.Output */
+  .highlight .gp { color: #555555; } /* Generic.Prompt */
+  .highlight .gs { font-weight: bold; } /* Generic.Strong */
+  .highlight .gu { color: #aaaaaa; } /* Generic.Subheading */
+  .highlight .gt { color: #aa0000; } /* Generic.Traceback */
+  .highlight .kc { color: #000000; font-weight: bold; } /* Keyword.Constant */
+  .highlight .kd { color: #000000; font-weight: bold; } /* Keyword.Declaration */
+  .highlight .kn { color: #000000; font-weight: bold; } /* Keyword.Namespace */
+  .highlight .kp { color: #000000; font-weight: bold; } /* Keyword.Pseudo */
+  .highlight .kr { color: #000000; font-weight: bold; } /* Keyword.Reserved */
+  .highlight .kt { color: #445588; font-weight: bold; } /* Keyword.Type */
+  .highlight .m { color: #009999; } /* Literal.Number */
+  .highlight .s { color: #d01040; } /* Literal.String */
+  .highlight .na { color: #008080; } /* Name.Attribute */
+  .highlight .nb { color: #0086b3; } /* Name.Builtin */
+  .highlight .nc { color: #445588; font-weight: bold; } /* Name.Class */
+  .highlight .no { color: #008080; } /* Name.Constant */
+  .highlight .nd { color: #3c5d5d; font-weight: bold; } /* Name.Decorator */
+  .highlight .ni { color: #800080; } /* Name.Entity */
+  .highlight .ne { color: #990000; font-weight: bold; } /* Name.Exception */
+  .highlight .nf { color: #990000; font-weight: bold; } /* Name.Function */
+  .highlight .nl { color: #990000; font-weight: bold; } /* Name.Label */
+  .highlight .nn { color: #555555; } /* Name.Namespace */
+  .highlight .nt { color: #000080; } /* Name.Tag */
+  .highlight .nv { color: #008080; } /* Name.Variable */
+  .highlight .ow { color: #000000; font-weight: bold; } /* Operator.Word */
+  .highlight .w { color: #bbbbbb; } /* Text.Whitespace */
+  .highlight .mf { color: #009999; } /* Literal.Number.Float */
+  .highlight .mh { color: #009999; } /* Literal.Number.Hex */
+  .highlight .mi { color: #009999; } /* Literal.Number.Integer */
+  .highlight .mo { color: #009999; } /* Literal.Number.Oct */
+  .highlight .sb { color: #d01040; } /* Literal.String.Backtick */
+  .highlight .sc { color: #d01040; } /* Literal.String.Char */
+  .highlight .sd { color: #d01040; } /* Literal.String.Doc */
+  .highlight .s2 { color: #d01040; } /* Literal.String.Double */
+  .highlight .se { color: #d01040; } /* Literal.String.Escape */
+  .highlight .sh { color: #d01040; } /* Literal.String.Heredoc */
+  .highlight .si { color: #d01040; } /* Literal.String.Interpol */
+  .highlight .sx { color: #d01040; } /* Literal.String.Other */
+  .highlight .sr { color: #009926; } /* Literal.String.Regex */
+  .highlight .s1 { color: #d01040; } /* Literal.String.Single */
+  .highlight .ss { color: #990073; } /* Literal.String.Symbol */
+  .highlight .bp { color: #999999; } /* Name.Builtin.Pseudo */
+  .highlight .vc { color: #008080; } /* Name.Variable.Class */
+  .highlight .vg { color: #008080; } /* Name.Variable.Global */
+  .highlight .vi { color: #008080; } /* Name.Variable.Instance */
+  .highlight .il { color: #009999; } /* Literal.Number.Integer.Long */

-  /*--- custom light colors ---*/
+  /* --- custom light colors --- */
  --highlight-bg-color: #f7f7f7;
  --highlighter-rouge-color: #353a3d;
  --highlight-lineno-color: #c2c6cc;
  --highlight-lineno-border-color: #e9ecef;
-
  --inline-code-bg: #f3f3f3;
 } // light-syntax
--- a/assets/css/_colors/light-typography.scss
+++ b/assets/css/_colors/light-typography.scss
@@ -7,118 +7,70 @@
 */

@mixin light-scheme {
-
+  /* Common */
  --body-bg: #fafafa;
-
  --mask-bg: #c1c3c5;
-
  --main-wrapper-bg: white;
-
  --main-border-color: #f3f3f3;
-
  --btn-border-color: #e9ecef;
-
  --text-color: #333333;
-
  --blockquote-border-color: #eee;
-
  --blockquote-text-color: #9a9a9a;
-
  --link-color: #2a408e;
-
  --link-underline-color: #dee2e6;
-
  --text-muted-color: gray;
-
  --tb-odd-bg: #fbfcfd;
-
  --tb-border-color: #eaeaea;
-
  --button-bg: #fff;
-
  --btn-backtotop-color: #686868;
-
  --btn-backtotop-border-color: #f1f1f1; //--main-border-color,
-
  --btn-box-shadow: #eaeaea;

  /* Sidebar */
-
  --sidebar-bg: radial-gradient(
-    circle, rgba(42, 30, 107, 1) 0%, rgba(35, 37, 46, 1) 100%);
-
+    circle,
+    rgba(42, 30, 107, 1) 0%,
+    rgba(35, 37, 46, 1) 100%);
  --nav-cursor-color: #fcfcfc;

  /* Topbar */
-
  --topbar-wrapper-bg: white;
-
  --topbar-text-color: rgb(78, 78, 78);
-
  --search-wrapper-bg: #f5f5f5;
-
  --search-tag-bg: #f8f9fa;
-
  --search-icon-color: #c2c6cc;
-
  --input-focus-border-color: var(--btn-border-color);

  /* Home page */
-
  --post-list-text-color: dimgray;
-
  --btn-patinator-text-color: #555555;
-
  --btn-paginator-hover-color: #e9ecef;
-
  --btn-active-bg: #2a408e;
-
  --btn-active-border-color: #007bff;
-
  --btn-text-color: #f8f8f8;
-
  --btn-paginator-border-color: #f1f1f1;
-
  --btn-paginator-shadow: #4b92d2;

  /* Posts */
-
  --btn-share-hover-color: var(--link-color);
-
  --card-border-color: #f1f1f1;
-
  --card-box-shadow: rgba(234, 234, 234, 0.7686274509803922);
-
  --label-color: #808080;
-
-  --relate-post-date: rgba(30, 55, 70, .4);
-
+  --relate-post-date: rgba(30, 55, 70, 0.4);
  --tag-bg: rgba(0, 0, 0, 0.075);
-
  --tag-border: #dee2e6;
-
  --tag-shadow: var(--btn-border-color);
-
  --tag-hover: rgb(222, 226, 230);
-
  --categories-hover-bg: var(--btn-border-color);
-
  --dash-color: silver;

-
  /* Archive */
-
  --timeline-color: rgba(0, 0, 0, 0.075);
-
  --timeline-node-bg: #c2c6cc;
-
  --timeline-year-dot-color: #ffffff;

  /* Footer */
-
  --footer-bg-color: #ffffff;
-
  --footnote-target-bg: lightcyan;
-
-  ---footer-link: inherit;
-}
+  --footer-link: #424242;
+} // light-scheme
--- a/assets/css/post.scss
+++ b/assets/css/post.scss
@@ -27,25 +27,30 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";
  border-color: var(--btn-border-color);
 }

-.author {
-  @include semi-bold;
-}
-
-.post {
-  img {
-    max-width: 100%;
-    margin-top: .5rem;
-    margin-bottom: 1.5rem;
-    position: relative;
-    left: 50%;
-    -webkit-transform: translateX(-50%);
-    -ms-transform: translateX(-50%);
-    transform: translateX(-50%);
+.post-content {
+  > ol, > ul, > dl {
+    padding-left: 2rem;
+    li+li {
+      margin-top: 0.3rem;
+    }
+  }
+  li {
+    > ol, > ul, > dl { // sub list
+      padding-left: 2rem;
+    }
+    > p {
+      margin: 1rem 0 0.8rem;
+    }
+  }
+  .post-preview-img {
+    margin-top: 0;
+    margin-bottom: 2.5rem;
+    @include align-center;
  }
 }

 .post-tail-wrapper {
-  margin-top: 4rem;
+  margin-top: 6rem;
  border-bottom: 1px double var(--main-border-color);
  font-size: 0.85rem;
 }
@@ -209,6 +214,9 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";

 #post-extend-wrapper {
  min-height: 2rem;
+  #disqus_thread {
+    margin-bottom: 2rem;
+  }
 }

 .post-tail-bottom a {
@@ -334,47 +342,10 @@ $prompt-newer: "{{ site.data.label.post.button.next }}";

 /* Hide SideBar and TOC */
@media all and (max-width: 830px) {
-  .post img {
-    position: relative;
-    left: 50%;
-    -webkit-transform: translateX(-50%);
-    -ms-transform: translateX(-50%);
-    transform: translateX(-50%);
-  }
-
  .post-navigation {
    padding-left: 0;
    padding-right: 0;
    margin-left: -.5rem;
    margin-right: -.5rem;
  }
-
-}
-
-/*
-  The following resposive design aim to
-  make #post-extend-wrapper margin-right same as pannel's width
-*/
-@media all and (min-width: 1200px) {
-  #post-extend-wrapper {
-    margin-right: 25%;
-  }
-}
-
-@media all and (min-width: 1460px) {
-  #post-extend-wrapper {
-    margin-right: 300px;
-  }
-}
-
-@media all and (min-width: 1650px) {
-  #post-extend-wrapper {
-    margin-right: calc((100% - 1150px) / 10 + 300px);
-  }
-}
-
-@media all and (min-width: 1700px) {
-  #post-extend-wrapper {
-    margin-right: calc((100% - 1150px) / 8 + 300px);
-  }
 }
--- a/assets/img/sample/devices-mockup.png
+++ b/assets/img/sample/devices-mockup.png
--- a/assets/img/sample/gh-pages-sources.png
+++ b/assets/img/sample/gh-pages-sources.png
--- a/assets/js/_commons/back-to-top.js
+++ b/assets/js/_commons/back-to-top.js
@@ -3,16 +3,16 @@ Reference: https://bootsnipp.com/snippets/featured/link-to-top-page
 */
 $(window).scroll(function() {
  if ($(this).scrollTop() > 50
-      && $('#sidebar-trigger').css('display') == 'none') {
-    $('#back-to-top').fadeIn();
+      && $("#sidebar-trigger").css("display") === "none") {
+    $("#back-to-top").fadeIn();
  } else {
-    $('#back-to-top').fadeOut();
+    $("#back-to-top").fadeOut();
  }
 });

 $(function() {
-  $('#back-to-top').click(function() {
-    $('body,html').animate({scrollTop: 0}, 800);
+  $("#back-to-top").click(function() {
+    $("body,html").animate({scrollTop: 0}, 800);
    return false;
  });
 });
--- a/assets/js/_commons/copy-link.js
+++ b/assets/js/_commons/copy-link.js
@@ -1,20 +1,22 @@
 /*
-* Copy current page url to clipboard.
-* v2.1
-* https://github.com/cotes2020/jekyll-theme-chirpy
-* © 2020 Cotes Chung
-* MIT License
-*/
+ * Copy current page url to clipboard.
+ * v2.1
+ * https://github.com/cotes2020/jekyll-theme-chirpy
+ * © 2020 Cotes Chung
+ * MIT License
+ */

 function copyLink(url) {
-  if (!url || 0 === url.length)
-  url = window.location.href;
+  if (!url || 0 === url.length) {
+    url = window.location.href;
+  }
+  
  var $temp = $("<input>");
-
  $("body").append($temp);
  $temp.val(url).select();
  document.execCommand("copy");
  $temp.remove();

  alert("Link copied successfully!");
-}
+
+}
--- a/assets/js/_commons/search-display.js
+++ b/assets/js/_commons/search-display.js
@@ -8,18 +8,18 @@

 $(function() {

-  var btnSbTrigger = $('#sidebar-trigger');
-  var btnSearchTrigger = $('#search-trigger');
-  var btnCancel = $('#search-cancel');
-  var btnClear = $('#search-cleaner');
+  var btnSbTrigger = $("#sidebar-trigger");
+  var btnSearchTrigger = $("#search-trigger");
+  var btnCancel = $("#search-cancel");
+  var btnClear = $("#search-cleaner");

-  var main = $('#main');
-  var topbarTitle = $('#topbar-title');
-  var searchWrapper = $('#search-wrapper');
-  var resultWrapper = $('#search-result-wrapper');
-  var results = $('#search-results');
-  var input = $('#search-input');
-  var hints = $('#search-hints');
+  var main = $("#main");
+  var topbarTitle = $("#topbar-title");
+  var searchWrapper = $("#search-wrapper");
+  var resultWrapper = $("#search-result-wrapper");
+  var results = $("#search-results");
+  var input = $("#search-input");
+  var hints = $("#search-hints");


  /*--- Actions in small screens (Sidebar unloaded) ---*/
@@ -27,75 +27,76 @@ $(function() {
  var scrollBlocker = (function() {
    var offset = 0;
    return {
-      block: function() {
+      block() {
        offset = $(window).scrollTop();
      },
-      release: function() {
-        $('html,body').scrollTop(offset);
+      release() {
+        $("html,body").scrollTop(offset);
      },
-      getOffset: function() {
+      getOffset() {
        return offset;
      }
-    }
-  })();
+    };
+  }());

  var mobileSearchBar = (function() {
    return {
-      on: function() {
-        btnSbTrigger.addClass('unloaded');
-        topbarTitle.addClass('unloaded');
-        btnSearchTrigger.addClass('unloaded');
-        searchWrapper.addClass('d-flex');
-        btnCancel.addClass('loaded');
+      on() {
+        btnSbTrigger.addClass("unloaded");
+        topbarTitle.addClass("unloaded");
+        btnSearchTrigger.addClass("unloaded");
+        searchWrapper.addClass("d-flex");
+        btnCancel.addClass("loaded");
      },
-      off: function() {
-        btnCancel.removeClass('loaded');
-        searchWrapper.removeClass('d-flex');
-        btnSbTrigger.removeClass('unloaded');
-        topbarTitle.removeClass('unloaded');
-        btnSearchTrigger.removeClass('unloaded');
+      off() {
+        btnCancel.removeClass("loaded");
+        searchWrapper.removeClass("d-flex");
+        btnSbTrigger.removeClass("unloaded");
+        topbarTitle.removeClass("unloaded");
+        btnSearchTrigger.removeClass("unloaded");
      }
-    }
-  })();
+    };
+  }());

  var resultSwitch = (function() {
    var visable = false;

    return {
-      on: function() {
+      on() {
        if (!visable) {
-          resultWrapper.removeClass('unloaded');
-          main.addClass('hidden');
+          resultWrapper.removeClass("unloaded");
+          main.addClass("hidden");

          visable = true;
          scrollBlocker.block();
        }
      },
-      off: function() {
+      off() {
        if (visable) {
          results.empty();
-          if (hints.hasClass('unloaded')) {
-            hints.removeClass('unloaded');
+          if (hints.hasClass("unloaded")) {
+            hints.removeClass("unloaded");
          }
-          resultWrapper.addClass('unloaded');
-          btnClear.removeClass('visable');
-          main.removeClass('hidden');
+          resultWrapper.addClass("unloaded");
+          btnClear.removeClass("visable");
+          main.removeClass("hidden");

-          input.val('');
+          input.val("");
          visable = false;

          scrollBlocker.release();
        }
      },
-      isVisable: function() {
+      isVisable() {
        return visable;
      }
-    }
-  })();
+    };
+
+  }());


  function isMobileView() {
-    return btnCancel.hasClass('loaded');
+    return btnCancel.hasClass("loaded");
  }

  btnSearchTrigger.click(function() {
@@ -110,45 +111,45 @@ $(function() {
  });

  input.focus(function() {
-    searchWrapper.addClass('input-focus');
+    searchWrapper.addClass("input-focus");
  });

  input.focusout(function() {
-    searchWrapper.removeClass('input-focus');
+    searchWrapper.removeClass("input-focus");
  });

-  input.on('keyup', function(e) {
-    if (e.keyCode == 8 && input.val() == '') {
+  input.on("keyup", function(e) {
+    if (e.keyCode === 8 && input.val() === "") {
      if (!isMobileView()) {
        resultSwitch.off();
      } else {
-        hints.removeClass('unloaded');
+        hints.removeClass("unloaded");
      }
    } else {
-      if (input.val() != '') {
+      if (input.val() !== "") {
        resultSwitch.on();

-        if (!btnClear.hasClass('visible')) {
-          btnClear.addClass('visable');
+        if (!btnClear.hasClass("visible")) {
+          btnClear.addClass("visable");
        }

        if (isMobileView()) {
-          hints.addClass('unloaded');
+          hints.addClass("unloaded");
        }
      }
    }
  });

-  btnClear.on('click', function() {
-    input.val('');
+  btnClear.on("click", function() {
+    input.val("");
    if (isMobileView()) {
-      hints.removeClass('unloaded');
+      hints.removeClass("unloaded");
      results.empty();
    } else {
      resultSwitch.off();
    }
    input.focus();
-    btnClear.removeClass('visable');
+    btnClear.removeClass("visable");
  });

-});
+});
--- a/assets/js/_commons/sidebar.js
+++ b/assets/js/_commons/sidebar.js
@@ -11,24 +11,24 @@ $(function() {
  var sidebarUtil = (function() {
    const ATTR_DISPLAY = "sidebar-display";
    var isExpanded = false;
-    var body = $('body');
+    var body = $("body");

    return {
-      toggle: function() {
-        if (isExpanded == false) {
-          body.attr(ATTR_DISPLAY, '');
+      toggle() {
+        if (isExpanded === false) {
+          body.attr(ATTR_DISPLAY, "");
        } else {
          body.removeAttr(ATTR_DISPLAY);
        }

        isExpanded = !isExpanded;
      }
-    }
+    };

-  })();
+  }());

  $("#sidebar-trigger").click(sidebarUtil.toggle);

-  $('#mask').click(sidebarUtil.toggle);
+  $("#mask").click(sidebarUtil.toggle);

 });
--- a/assets/js/_commons/topbar-switch.js
+++ b/assets/js/_commons/topbar-switch.js
@@ -11,7 +11,47 @@ $(function() {
  var didScroll;
  var lastScrollTop = 0;
  var delta = 5;
-  var topbarHeight = $('#topbar-wrapper').outerHeight();
+  var topbarHeight = $("#topbar-wrapper").outerHeight();
+
+  function hasScrolled() {
+    var st = $(this).scrollTop();
+
+    /* Make sure they scroll more than delta */
+    if (Math.abs(lastScrollTop - st) <= delta) {
+      return;
+    }
+
+    if (st > lastScrollTop && st > topbarHeight) {
+      /* Scroll Down */
+      $("#topbar-wrapper").removeClass("topbar-down").addClass("topbar-up");
+
+      if ($("#toc-wrapper").length > 0) {
+        $("#toc-wrapper").removeClass("topbar-down");
+      }
+
+      if ($(".access").length > 0) {
+        $(".access").removeClass("topbar-down");
+      }
+
+      if ($("#search-input").is(":focus")) {
+        $("#search-input").blur(); /* remove focus */
+      }
+
+    } else {
+      /* Scroll Up */
+      if (st + $(window).height() < $(document).height()) {
+        $("#topbar-wrapper").removeClass("topbar-up").addClass("topbar-down");
+        if ($("#toc-wrapper").length > 0) {
+          $("#toc-wrapper").addClass("topbar-down");
+        }
+        if ($(".access").length > 0) {
+          $(".access").addClass("topbar-down");
+        }
+      }
+    }
+
+    lastScrollTop = st;
+  }

  $(window).scroll(function(event) {
    if ($("#topbar-title").is(":hidden")) { /* Not in small screens */
@@ -26,42 +66,4 @@ $(function() {
    }
  }, 250);

-  function hasScrolled() {
-    var st = $(this).scrollTop();
-
-    /* Make sure they scroll more than delta */
-    if (Math.abs(lastScrollTop - st) <= delta)
-      return;
-
-    if (st > lastScrollTop && st > topbarHeight) {
-      /* Scroll Down */
-      $('#topbar-wrapper').removeClass('topbar-down').addClass('topbar-up');
-
-      if ( $('#toc-wrapper').length > 0) {
-        $('#toc-wrapper').removeClass('topbar-down');
-      }
-
-      if ( $('.access').length > 0) {
-        $('.access').removeClass('topbar-down');
-      }
-
-      if ($('#search-input').is(':focus')) {
-        $('#search-input').blur(); /* remove focus */
-      }
-
-    } else {
-      /* Scroll Up */
-      if (st + $(window).height() < $(document).height()) {
-        $('#topbar-wrapper').removeClass('topbar-up').addClass('topbar-down');
-        if ( $('#toc-wrapper').length > 0) {
-          $('#toc-wrapper').addClass('topbar-down');
-        }
-        if ( $('.access').length > 0) {
-          $('.access').addClass('topbar-down');
-        }
-      }
-    }
-
-    lastScrollTop = st;
-  }
 });
--- a/assets/js/_commons/topbar-title.js
+++ b/assets/js/_commons/topbar-title.js
@@ -13,9 +13,9 @@ $(function() {
          $("div.post>h1").text().trim() : $("h1").text().trim();

  if ($("#page-category").length || $("#page-tag").length) {
-    /* The title in Category or Tag page will be '<title> <count_of_posts>' */
+    /* The title in Category or Tag page will be "<title> <count_of_posts>" */
    if (/\s/.test(title)) {
-      title = title.replace(/[0-9]/g, '').trim();
+      title = title.replace(/[0-9]/g, "").trim();
    }
  }

@@ -29,19 +29,19 @@ $(function() {
    }

    if ($(this).scrollTop() >= 95) {
-      if ($("#topbar-title").text() != title) {
+      if ($("#topbar-title").text() !== title) {
        $("#topbar-title").text(title);
      }
    } else {
-      if ($("#topbar-title").text() != DEFAULT) {
+      if ($("#topbar-title").text() !== DEFAULT) {
        $("#topbar-title").text(DEFAULT);
      }
    }
  });

  /* Click title remove hover effect. */
-  $('#topbar-title').click(function() {
-    $('body,html').animate({scrollTop: 0}, 800);
+  $("#topbar-title").click(function() {
+    $("body,html").animate({scrollTop: 0}, 800);
  });

 });
--- a/assets/js/_utils/category-collapse.js
+++ b/assets/js/_utils/category-collapse.js
@@ -7,26 +7,26 @@
 */

 $(function() {
-  var child_prefix = "l_";
-  var parent_prefix = "h_";
+  var childPrefix = "l_";
+  var parentPrefix = "h_";

  /* close up top-category */
  $(".collapse").on("hide.bs.collapse", function() { /* Bootstrap collapse events. */
-    var parent_id = parent_prefix + $(this).attr('id').substring(child_prefix.length);
-    if (parent_id) {
-      $("#" + parent_id + " .far.fa-folder-open").attr("class", "far fa-folder fa-fw");
-      $("#" + parent_id + " i.fas").addClass("rotate");
-      $("#" + parent_id).removeClass("hide-border-bottom");
+    var parentId = parentPrefix + $(this).attr("id").substring(childPrefix.length);
+    if (parentId) {
+      $("#" + parentId + " .far.fa-folder-open").attr("class", "far fa-folder fa-fw");
+      $("#" + parentId + " i.fas").addClass("rotate");
+      $("#" + parentId).removeClass("hide-border-bottom");
    }
  });

  /* expand the top category */
  $(".collapse").on("show.bs.collapse", function() {
-    var parent_id = parent_prefix + $(this).attr('id').substring(child_prefix.length);
-    if (parent_id) {
-      $("#" + parent_id + " .far.fa-folder").attr("class", "far fa-folder-open fa-fw");
-      $("#" + parent_id + " i.fas").removeClass("rotate");
-      $("#" + parent_id).addClass("hide-border-bottom");
+    var parentId = parentPrefix + $(this).attr("id").substring(childPrefix.length);
+    if (parentId) {
+      $("#" + parentId + " .far.fa-folder").attr("class", "far fa-folder-open fa-fw");
+      $("#" + parentId + " i.fas").removeClass("rotate");
+      $("#" + parentId).addClass("hide-border-bottom");
    }
  });

--- a/assets/js/_utils/img-hyperlink.js
+++ b/assets/js/_utils/img-hyperlink.js
@@ -0,0 +1,16 @@
+/*
+ * Find out the <a> tag contains an image and mark it.
+ *
+ * v2.5.1
+ * https://github.com/cotes2020/jekyll-theme-chirpy
+ * © 2020 Cotes Chung
+ * MIT Licensed
+ */
+
+$(function() {
+
+  var MARK="img-hyperlink";
+
+  $("a:has(img)").addClass(MARK);
+  
+});
--- a/assets/js/_utils/pageviews.js
+++ b/assets/js/_utils/pageviews.js
@@ -11,82 +11,19 @@
 * MIT License
 */

-function countUp(min, max, destId) {
-  if (min < max) {
-    var numAnim = new CountUp(destId, min, max);
-    if (!numAnim.error) {
-      numAnim.start();
-    } else {
-      console.error(numAnim.error);
-    }
-  }
-}
-
-
-function countPV(path, rows) {
-  var count = 0;
-
-  for (var i = 0; i < rows.length; ++i) {
-    var gaPath = rows[i][0];
-    if (gaPath == path) { /* path format see: site.permalink */
-      count += parseInt(rows[i][1]);
-      break;
-    }
-  }
-
-  return count;
-}
-
-
-function tacklePV(rows, path, elem, hasInit) {
-  var count = countPV(path, rows);
-  count = (count == 0 ? 1 : count);
-
-  if (!hasInit) {
-    elem.text(new Intl.NumberFormat().format(count));
-  } else {
-    var initCount = parseInt(elem.text().replace(/,/g, ''));
-    if (count > initCount) {
-      countUp(initCount, count, elem.attr('id'));
-    }
-  }
-}
-
-
-function displayPageviews(data) {
-  if (data === undefined) {
-    return;
-  }
-
-  var hasInit = getInitStatus();
-  var rows = data.rows;
-
-  if ($("#post-list").length > 0) { /* the Home page */
-    $(".post-preview").each(function() {
-      var path = $(this).children("div").children("h1").children("a").attr("href");
-      tacklePV(rows, path, $(this).find('.pageviews'), hasInit);
-    });
-
-  } else if ($(".post").length > 0) { /* the post */
-    var path = window.location.pathname;
-    tacklePV(rows, path, $('#pv'), hasInit);
-  }
-}
-
-
-var getInitStatus = (function() {
+var getInitStatus = (function () {
  var hasInit = false;
-  return function() {
+  return () => {
    let ret = hasInit;
    if (!hasInit) {
      hasInit = true;
    }
    return ret;
-  }
-})();
+  };
+}());


-var PvCache = (function() {
+var PvCache = (function () {
  const KEY_PV = "pv";
  const KEY_CREATION = "pv_created_date";
  const KEY_PV_SRC = "pv_source";
@@ -105,26 +42,26 @@ var PvCache = (function() {
  }

  return {
-    getData: function() {
+    getData() {
      return JSON.parse(localStorage.getItem(KEY_PV) );
    },
-    saveOriginCache: function(pv) {
+    saveOriginCache(pv) {
      set(KEY_PV, pv);
      set(KEY_PV_SRC, Source.ORIGIN );
      set(KEY_CREATION, new Date().toJSON() );
    },
-    saveProxyCache: function(pv) {
+    saveProxyCache(pv) {
      set(KEY_PV, pv);
      set(KEY_PV_SRC, Source.PROXY );
      set(KEY_CREATION, new Date().toJSON() );
    },
-    isFromOrigin: function() {
-      return get(KEY_PV_SRC) == Source.ORIGIN;
+    isFromOrigin() {
+      return get(KEY_PV_SRC) === Source.ORIGIN;
    },
-    isFromProxy: function() {
-      return get(KEY_PV_SRC) == Source.PROXY;
+    isFromProxy() {
+      return get(KEY_PV_SRC) === Source.PROXY;
    },
-    isExpired: function() {
+    isExpired() {
      if (PvCache.isFromOrigin() ) {
        let date = new Date(get(KEY_CREATION));
        date.setDate(date.getDate() + 1); /* update origin records every day */
@@ -137,30 +74,110 @@ var PvCache = (function() {
      }
      return false;
    },
-    getAllPagevies: function() {
+    getAllPagevies() {
      return PvCache.getData().totalsForAllResults["ga:pageviews"];
    },
-    newerThan: function(pv) {
+    newerThan(pv) {
      return PvCache.getAllPagevies() > pv.totalsForAllResults["ga:pageviews"];
    },
-    inspectKeys: function() {
-      if (localStorage.getItem(KEY_PV) == null
-        || localStorage.getItem(KEY_PV_SRC) == null
-        || localStorage.getItem(KEY_CREATION) == null) {
+    inspectKeys() {
+      if (localStorage.getItem(KEY_PV) === null
+        || localStorage.getItem(KEY_PV_SRC) === null
+        || localStorage.getItem(KEY_CREATION) === null) {
        localStorage.clear();
      }
    }
  };

-})(); /* PvCache */
+}()); /* PvCache */
+
+function countUp(min, max, destId) {
+  if (min < max) {
+    var numAnim = new CountUp(destId, min, max);
+    if (!numAnim.error) {
+      numAnim.start();
+    } else {
+      console.error(numAnim.error);
+    }
+  }
+}
+
+
+function countPV(path, rows) {
+  var count = 0;
+
+  if (typeof rows !== "undefined" ) {
+    for (var i = 0; i < rows.length; ++i) {
+      var gaPath = rows[parseInt(i, 10)][0];
+      if (gaPath === path) { /* path format see: site.permalink */
+        count += parseInt(rows[parseInt(i, 10)][1], 10);
+        break;
+      }
+    }
+  }
+
+  return count;
+}
+
+
+function tacklePV(rows, path, elem, hasInit) {
+  var count = countPV(path, rows);
+  count = (count === 0 ? 1 : count);
+
+  if (!hasInit) {
+    elem.text(new Intl.NumberFormat().format(count));
+  } else {
+    var initCount = parseInt(elem.text().replace(/,/g, ""), 10);
+    if (count > initCount) {
+      countUp(initCount, count, elem.attr("id"));
+    }
+  }
+}
+
+
+function displayPageviews(data) {
+  if (typeof data === "undefined") {
+    return;
+  }
+
+  var hasInit = getInitStatus();
+  var rows = data.rows; /* could be undefined */
+
+  if ($("#post-list").length > 0) { /* the Home page */
+    $(".post-preview").each(function() {
+      var path = $(this).children("div").children("h1").children("a").attr("href");
+      tacklePV(rows, path, $(this).find(".pageviews"), hasInit);
+    });
+
+  } else if ($(".post").length > 0) { /* the post */
+    var path = window.location.pathname;
+    tacklePV(rows, path, $("#pv"), hasInit);
+  }
+}
+
+
+function fetchProxyPageviews() {
+  $.ajax({
+    type: "GET",
+    url: proxyEndpoint, /* see: /assets/js/_pv-config.js */
+    dataType: "jsonp",
+    jsonpCallback: "displayPageviews",
+    success: (data, textStatus, jqXHR) => {
+      PvCache.saveProxyCache(JSON.stringify(data));
+    },
+    error: (jqXHR, textStatus, errorThrown) => {
+      console.log("Failed to load pageviews from proxy server: " + errorThrown);
+    }
+  });
+}


 function fetchPageviews(fetchOrigin = true, filterOrigin = false) {
  /* pvCacheEnabled › see: /assets/js/_pv-config.js */
  if (pvCacheEnabled && fetchOrigin) {
-    fetch('/assets/js/data/pageviews.json')
-      .then(response => response.json())
-      .then(data => {
+    fetch("/assets/js/data/pageviews.json")
+      .then((response) => response.json())
+      .then((data) => {
        if (filterOrigin) {
          if (PvCache.newerThan(data)) {
            return;
@@ -178,25 +195,9 @@ function fetchPageviews(fetchOrigin = true, filterOrigin = false) {
 }


-function fetchProxyPageviews() {
-  $.ajax({
-    type: 'GET',
-    url: proxyEndpoint, /* see: /assets/js/_pv-config.js */
-    dataType: 'jsonp',
-    jsonpCallback: "displayPageviews",
-    success: function(data, textStatus, jqXHR) {
-      PvCache.saveProxyCache(JSON.stringify(data));
-    },
-    error: function(jqXHR, textStatus, errorThrown) {
-      console.log("Failed to load pageviews from proxy server: " + errorThrown);
-    }
-  });
-}
-
-
 $(function() {

-  if ($('.pageviews').length > 0) {
+  if ($(".pageviews").length > 0) {

    PvCache.inspectKeys();
    let cache = PvCache.getData();
--- a/assets/js/_utils/timeago.js
+++ b/assets/js/_utils/timeago.js
@@ -8,24 +8,28 @@

 $(function() {

+  var toRefresh = $(".timeago").length;
+
+  var intervalId = void 0;
+
  function timeago(iso, isLastmod) {
    let now = new Date();
    let past = new Date(iso);

-    if (past.getFullYear() != now.getFullYear()) {
+    if (past.getFullYear() !== now.getFullYear()) {
      toRefresh -= 1;
      return past.toLocaleString("en-US", {
-         year: 'numeric',
-         month: 'short',
-         day: 'numeric'
+        year: "numeric",
+        month: "short",
+        day: "numeric"
      });
    }

-    if (past.getMonth() != now.getMonth()) {
+    if (past.getMonth() !== now.getMonth()) {
      toRefresh -= 1;
      return past.toLocaleString("en-US", {
-         month: 'short',
-         day: 'numeric'
+        month: "short",
+        day: "numeric"
      });
    }

@@ -47,37 +51,33 @@ $(function() {
      return minute + " minute" + (minute > 1 ? "s" : "") + " ago";
    }

-    return (isLastmod? "just" : "Just") + " now";
+    return (isLastmod ? "just" : "Just") + " now";
  }

-
  function updateTimeago() {
    $(".timeago").each(function() {
      if ($(this).children("i").length > 0) {
        var basic = $(this).text();
-        var isLastmod = $(this).hasClass('lastmod');
+        var isLastmod = $(this).hasClass("lastmod");
        var node = $(this).children("i");
-        var date = node.text();   /* ISO Date: 'YYYY-MM-DDTHH:MM:SSZ' */
+        var date = node.text(); /* ISO Date: "YYYY-MM-DDTHH:MM:SSZ" */
        $(this).text(timeago(date, isLastmod));
        $(this).append(node);
      }
    });

-    if (toRefresh == 0 && intervalId != undefined) {
-      clearInterval(intervalId);  /* stop interval */
+    if (toRefresh === 0 && typeof intervalId !== "undefined") {
+      clearInterval(intervalId); /* stop interval */
    }
    return toRefresh;
  }

-
-  var toRefresh = $(".timeago").length;
-
-  if (toRefresh == 0) {
+  if (toRefresh === 0) {
    return;
  }

  if (updateTimeago() > 0) { /* run immediately */
-    var intervalId = setInterval(updateTimeago, 60000); /* run every minute */
+    intervalId = setInterval(updateTimeago, 60000); /* run every minute */
  }

-});
+});
--- a/assets/js/_utils/toc-filter.js
+++ b/assets/js/_utils/toc-filter.js
@@ -7,8 +7,8 @@
 */

 $(function() {
-  if ($("#post-wrapper .post-content h1").length == 0
-      && $("#post-wrapper .post-content h2").length == 0) {
+  if ($("#post-wrapper .post-content h1").length === 0
+      && $("#post-wrapper .post-content h2").length === 0) {
    $("#toc-wrapper").addClass("unloaded");
  }
 });
--- a/assets/js/_utils/tooltip-loader.js
+++ b/assets/js/_utils/tooltip-loader.js
@@ -6,5 +6,5 @@
 * MIT License
 */
 $(function () {
-  $('[data-toggle="tooltip"]').tooltip();
+  $("[data-toggle=\"tooltip\"]").tooltip();
 });
--- a/assets/js/post.min.js
+++ b/assets/js/post.min.js
@@ -13,3 +13,5 @@ layout: compress
 {% include_relative lib/_bootstrap-toc.min.js %}

 {% include_relative _utils/toc-filter.js %}
+
+{% include_relative _utils/img-hyperlink.js %}
--- a/docs/README_zh-CN.md
+++ b/docs/README_zh-CN.md
@@ -3,6 +3,7 @@
 🌏 [English](../README.md) • 简体中文

 [![Build Status](https://github.com/cotes2020/jekyll-theme-chirpy/workflows/build/badge.svg?branch=master&event=push)](https://github.com/cotes2020/jekyll-theme-chirpy/actions?query=branch%3Amaster+event%3Apush)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/8220b926db514f13afc3f02b7f884f4b)](https://app.codacy.com/manual/cotes2020/jekyll-theme-chirpy?utm_source=github.com&utm_medium=referral&utm_content=cotes2020/jekyll-theme-chirpy&utm_campaign=Badge_Grade_Dashboard)
 [![GitHub license](https://img.shields.io/github/license/cotes2020/jekyll-theme-chirpy.svg)](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/LICENSE)
 [![996.icu](https://img.shields.io/badge/link-996.icu-%23FF4D5B.svg)](https://996.icu)

@@ -14,139 +15,102 @@

 ## 目录

-* [功能预览](#功能预览)
-* [安装](#安装)
-* [运行指南](#运行指南)
-* [参与贡献](#参与贡献)
-* [感谢](#感谢)
-* [赞助](#赞助)
-* [许可证书](#许可证书)
+- [功能一览](#功能一览)
+- [安装](#安装)
+- [使用](#使用)
+- [参与贡献](#参与贡献)
+- [感谢](#感谢)
+- [赞助](#赞助)
+- [许可证书](#许可证书)

-## 功能预览
-
-* 文章置顶
-* 可配置的全局主题颜色
-* 文章最后修改日期
-* 文章目录
-* 自动推荐相关文章
-* 语法高亮
-* 二级目录
-* 数学表达式
-* 搜索
-* Atom 订阅
-* Disqus 评论
-* Google 分析
-* GA 浏览报告（高级功能）
-* SEO 优化
-* 网站性能优化
+## 功能一览

+- 文章置顶
+- 可配置的全局主题颜色
+- 文章最后修改日期
+- 文章目录
+- 自动推荐相关文章
+- 语法高亮
+- 二级目录
+- 数学表达式
+- 搜索
+- Atom 订阅
+- Disqus 评论
+- Google 分析
+- GA 浏览报告（高级功能）
+- SEO 优化
+- 网站性能优化

 ## 安装

-### 准备工作
+[Fork **Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/fork)，把仓库改名为 `USERNAME.github.io`（其中 `USERNAME` 是你的 GitHub 用户名）， 然后克隆到本地：

-按照 [Jekyll 官方文档](https://jekyllrb.com/docs/installation/) 完成基础环境的安装 (`Ruby`，`RubyGem`，`Bundler`)。
-
-为了使用项目内免费提供的脚本工具增进写作体验，如果你的机器系统是 Debian 或者 macOS，则需要确保安装了 [GNU coreutils](https://www.gnu.org/software/coreutils/)。否则，通过以下方式获得：
-
-* Debian
-
- ```console
- $ sudo apt-get install coreutils
- ```
-
-* macOS
-
- ```console
- $ brew install coreutils
- ```
-
-接着，[fork](https://github.com/cotes2020/jekyll-theme-chirpy/fork) 一份代码，然后克隆你 Fork 的仓库到本地机器上。
-
-```console
-$ git clone git@github.com:USER/jekyll-theme-chirpy.git -b master
+```terminal
+$ git clone https://github.com/USERNAME/USERNAME.github.io.git -b master --single-branch
 ```

-把上述的`USER` 替换为你的 GitHub username。
+### 设置本地环境

+如果你想在本地运行或构建, 参考 [Jekyll Docs](https://jekyllrb.com/docs/installation/)安装 `Ruby`， `RubyGems` 和 `Bundler`。

-### 安装 Jekyll 插件
-
-本地首次运行或编译，请在项目根目录下运行:
+首次运行或构建时, 请先安装 Jekyll plugins。在项目根目录运行：

 ```terminal
 $ bundle install
 ```
-`bundle` 命令会自动安装 `Gemfile` 内声明的依赖插件.

+`bundle` 会自动安装 `Gemfile` 内指定的依赖插件。

+为了生成一些额外的文件（Post 的 _分类_、_标签_ 以及 _更新时间列表_），需要用到一些脚本工具。而它们需要安装依赖包 [yq](https://github.com/mikefarah/yq#install)。另外，如果你电脑的操作系统是 Debian 或者 macOS，还需安装 [GNU coreutils](https://www.gnu.org/software/coreutils/)：

-## 运行指南
+- Debian

-### 文件目录
+  ```console
+  $ sudo apt-get install coreutils
+  ```

-下面是主要的文件目录：
+- macOS

-```sh
-jekyll-theme-chirpy/
-├── _data
-├── _includes      
-├── _layouts
-├── _posts          # posts stay here
-├── _scripts
-├── .travis.yml     # remove it
-├── .github         # remove this, too
-├── assets      
-├── tabs
-│   └── about.md    # the ABOUT page
-├── .gitignore
-├── 404.html
-├── Gemfile
-├── LICENSE
-├── README.md
-├── _config.yml     # configuration file
-├── tools           # script tools
-├── docs
-├── feed.xml
-├── index.html
-├── robots.txt
-└── sitemap.xml
+  ```console
+  $ brew install coreutils
+  ```
+
+## 使用
+
+运行 [**Chirpy**](https://github.com/cotes2020/jekyll-theme-chirpy/) 需要一些额外的文件, 它们不能通过 Jekyll 原生的命令生成，所以请严格依照下列说明去运行或部署此项目。
+
+### 初始化
+
+在项目根目录，开始初始化:
+
+```console
+$ bash tools/init.sh
 ```

+> 如果你不打算部署到 GitHub Pages, 在上述命令后附加参数选项 `--no-gh`。

-如备注所述，部分文件或目录需要被删除:
+上述脚本完成了以下工作:

-```terminal
-$ rm -rf .travis.yml .github _posts/* 
-```
+1. 从你的仓库中删除了:

+	- `.travis.yml`
+	- `_posts` 下的文件
+	- `docs` 目录
+
+2. 如果使用了参数 `--no-gh`，则会怒删 `.github`。否则，将会配置 GitHub Actions：把 `.github/workflows/pages-deploy.yml.hook` 的后缀 `.hook` 去除，然后删除 `.github` 里的其他目录和文件。
+
+3. 自动提交一个 Commit 以保存上述文件的更改。

 ### 配置文件

-根据个人需要去修改 `_config.yml` 的变量，大部分都有注释介绍用法。
+根据个人需要去修改 `_config.yml` 的变量，大部分都有注释介绍用法。典型的几个选项是：

-* `url`
-    
-    定义网站 URL，注意结尾不带 `/`。格式： `<protocol>://<domain>`.
+- `url`
+- `avatar`
+- `timezone`
+- `theme_mode`

-* `avatar`
-    
-    定义头像，示例的文件放置在：`/assets/img/sample/avatar.jpg`. 把它换成你自己的头像，路径不限定，越小越好。(压缩图像体积可上这个网站：*<https://tinypng.com/>* ).
-
-* `timezone`
-
-    定义时区 ，默认为 `亚洲/上海`，如果肉身翻墙要换城市可在此列表找到： [TimezoneConverter](http://www.timezoneconverter.com/cgi-bin/findzone/findzone) 或者 [Wikipedia](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones).
-
-* `theme_mode`
-  
-    定义颜色方案，有三种可选：:
-    
-    - **dual**  - 自动跟随系统的 `深色`/`浅色` 设置，当系统或者浏览器不支持深色模式，则默认显示为浅色模式。无论如何，侧边栏左下角都会显示一个颜色切换按钮。
-    - **dark**  - 全程深色模式。
-    - **light** - 全程浅色模式。
-
-
-###  本地运行
+### 本地运行

 使用以下工具可轻松运行:

@@ -158,105 +122,53 @@ $ bash tools/run.sh

 如果你想在本地服务运行后，把修改源文件的更改实时刷新，可使用选项 `-r` (或 `--realtime`)，不过要先安装依赖 [**fswatch**](http://emcrisostomo.github.io/fswatch/) 。

-###  部署到 GitHub Pages
+### 部署

 部署开始前，把  `_config.yml` 的 `url` 改为 `https://<username>.github.io`(或者你的私有域名，如：`https://yourdomain.com`)。另外，如果你想使用 [Project 类型网站](https://help.github.com/en/github/working-with-github-pages/about-github-pages#types-of-github-pages-sites)，修改配置文件的 `baseurl` 为项目名称，以斜杠开头，如：`/project`。

-#### 方法 1: 由 GitHub Pages 生成站点
+假设你已经完成了 [初始化](#初始化)，现在你可以选择下列其中一个方式去站点部署。

-依照本方法，你可以直接把源码推送到远端仓库。
+#### 部署到 GitHub Pages

-> **注**: 如果你想使用任何不在这个[列表](https://pages.github.com/versions/)上的插件，越过此方法，直接看 [*方法 2: 本地构建*](#方法-2-本地构建).
+由于安全原因，GitHub Pages 的构建强制加了 `safe`参数，这导致了我们不能使用脚本工具去创建所需的附加页面。因此，我们可以使用 GitHub Actions 去构建站点，把站点文件存储在一个新分支上，再指定该分支作为 Pages 服务的源。

-**1**. 仓库改名为:
+1. 推送任意一个 commit 到 `origin/master` 以触发 GitHub Actions workflow。一旦 build 完毕并且成功，远端将会自动出现一个新分支 `gh-pages` 用来存储构建的站点文件。

-|站点类型 | 仓库名称|
-|:---|:---|
-|User or Organization | `<username>.github.io`|
-|Project| `<username>.github.io` 以外的名字，譬如 `project`|
+2. 回到 GitHub 上的仓库， 通过 _Settings_
+ → _Options_ → _GitHub Pages_ 选择分支 `gh-pages` 作为[_发布源_](https://docs.github.com/en/github/working-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site):
+    ![gh-pages-sources](https://raw.githubusercontent.com/cotes2020/jekyll-theme-chirpy/master/assets/img/sample/gh-pages-sources.png)

-**2**. 提交本地更改，然后运行:
+3. 按照 GitHub 指示的地址去访问你的网站。
+
+#### 部署到其他 Pages 平台
+
+在 GitHub 之外的平台，例如 GitLab，就没法享受 **GitHub Actions** 的便利了。因此我们需要在本地构建站点（或者在其他第三方 CI 平台），然后推送站点文件到服务器上。
+
+在项目根目录，运行:

 ```console
-$ bash tools/publish.sh
+$ bash tools/build.sh -d /path/to/site/
 ```

->**注**: *最后更新* 列表根据文章的 git 修改记录生成，所以运行前先把 `_posts` 目录的修改提交。
-
-它会自动生成文章的 *最后修改日期* 和 *分类 / 标签* 页面，并自动提交一个 commit 并推送到 `origin/master` 。输出日志类似如下：
-
-```terminal
-[INFO] Success to update lastmod for 4 post(s).
-[INFO] Succeed! 3 category-pages created.
-[INFO] Succeed! 4 tag-pages created.
-[INFO] Published successfully!
-```
-
-**3**. 到 GitHub 网页为该项目开启 Pages 服务。
-
-**4**. 网站将运行在：
-
-|站点类型 | 网站 URL |
-|:---|:---|
-|User or Organization | `https://<username>.github.io/`|
-|Project| `https://<username>.github.io/project/`|
-
-
-#### 方法 2: 本地构建
-
-由于安全原因，GitHub Pages 不允许第三方插件运行，如果你想突破规则，就要本地构建站点内容。
-
-**1**. 到 GitHub 网页，创建一个新的仓库，根据以下规则命名: 
-
-|站点类型 | 仓库名称|
-|:---|:---|
-|User or Organization | `<username>.github.io`|
-|Project| `<username>.github.io` 以外的名字， 例如 `project`|
-
-然后 Clone 新仓库到本地。
-
-**2**. 构建站点:
-
-```console
-$ bash tools/build.sh -d /path/to/local/project/
-```
-> `project` 为新仓库名称。
-
-生成的静态文件将会在 `/path/to/local/project`. 把新仓库的修改提交并推送到远端 `master` 分支.
-
-**3**. 回到 GithHub 网页，为该仓库开启 Pages 服务。
-
-**4**. 网站将运行在:
-
-|站点类型 | 站点 URL |
-|:---|:---|
-|User or Organization | `https://<username>.github.io/`|
-|Project| `https://<username>.github.io/project/`|
-
-#### 结束工作
-
-无论你选择了哪种方式部署网站到 GitHub Pages, 请开启 `HTTPS` 功能。具体细节参考官方说明：[Securing your GitHub Pages site with HTTPS](https://help.github.com/en/github/working-with-github-pages/securing-your-github-pages-site-with-https)。
+生成的静态文件将会在 `/path/to/site/`， 把内部的文件上传到服务器即可。

 ### 文档

 若想要更多细节以及更佳的阅读体验，请参阅 [线上教程](https://chirpy.cotes.info/categories/tutorial/)。 与此同时，[Wiki](https://github.com/cotes2020/jekyll-theme-chirpy/wiki) 也有一份教程的拷贝。

-
 ## 参与贡献

 三人行必有我师，欢迎提报告 bug, 帮助改进代码质量，或者提交新功能。具体操作规则请参考 [贡献指南](../.github/CONTRIBUTING.md)，谢谢 🙏。

-## 感谢
+## 鸣谢

 这个主题的开发主要基于 [Jekyll](https://jekyllrb.com/) 生态、[Bootstrap](https://getbootstrap.com/)、[Font Awesome](https://fontawesome.com/) 和其他一些出色的工具 (相关文件中可以找到这些工具的版权信息).

-:tada:感谢所有参与代码贡献的小伙伴, 他们的 GayHub ID 在这个[列表](https://github.com/cotes2020/jekyll-theme-chirpy/graphs/contributors)。 另外, 提交过 issues(或者未被合并 PR) 的高富帅和白富美也不会被遗忘,他/她们帮助报告 bug、分享新点子或者启发了我写出更通俗易懂的文档。
-
+:tada: 感谢所有参与代码贡献的小伙伴, 他们的 GayHub ID 在这个[列表](https://github.com/cotes2020/jekyll-theme-chirpy/graphs/contributors)。 另外, 提交过 issues(或者未被合并 PR) 的高富帅和白富美也不会被遗忘,他/她们帮助报告 bug、分享新点子或者启发了我写出更通俗易懂的文档。

 ## 赞助

-如果您喜欢这个主题或者它对您有帮助，请考虑打赏作者：在 [项目主页](https://github.com/cotes2020/jekyll-theme-chirpy) 点击按钮 <kbd>:heart:Sponsor</kbd> 选择适合的链接即可完成（国内一般选第二个链接，支付宝/微信赞助），您的打赏将会极大地鼓励作者，并帮助作者更好地维护项目！
-
+如果您喜欢这个主题或者它对您有帮助，请考虑打赏作者：在 [项目主页](https://github.com/cotes2020/jekyll-theme-chirpy) 点击按钮 <kbd>:heart: Sponsor</kbd> 选择适合的链接即可完成（国内一般选第二个链接，支付宝/微信赞助），您的打赏将会极大地鼓励作者，并帮助作者更好地维护项目！

 ## 许可证书

--- a/tools/build.sh
+++ b/tools/build.sh
@@ -8,14 +8,17 @@

 set -eu

-CMD="JEKYLL_ENV=production bundle exec jekyll b"
+WORK_DIR="$(dirname "$(dirname "$(realpath "$0")")")"

-WORK_DIR=$(dirname $(dirname $(realpath "$0")))
+CONTAINER="${WORK_DIR}/.container"

-CONTAINER=${WORK_DIR}/.container
+dest="${WORK_DIR}/_site"

-DEST=${WORK_DIR}/_site
+cmd="JEKYLL_ENV=production bundle exec jekyll b"

+docker=false
+
+config=""

 _help() {
  echo "Usage:"
@@ -23,87 +26,106 @@ _help() {
  echo "   bash build.sh [options]"
  echo
  echo "Options:"
-  echo "   -b, --baseurl <URL>      The site relative url that start with slash, e.g. '/project'"
-  echo "   -h, --help               Print the help information"
-  echo "   -d, --destination <DIR>  Destination directory (defaults to ./_site)"
+  echo "  -b, --baseurl     <URL>                  The site relative url that start with slash, e.g. '/project'"
+  echo "  -h, --help                               Print the help information"
+  echo "  -d, --destination <DIR>                  destination directory (defaults to ./_site)"
+  echo "      --docker                             Build site within docker"
+  echo "      --config      <CONFIG_a[,CONFIG_b]>  Specify config files"
 }

+_install_tools() {
+  # docker image `jekyll/jekyll` based on Alpine Linux
+  echo "http://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories
+  apk update
+  apk add yq
+}

 _init() {
-  cd $WORK_DIR
+  cd "$WORK_DIR"
+
+  if [[ -f Gemfile.lock ]]; then
+    rm -f Gemfile.lock
+  fi

  if [[ -d $CONTAINER ]]; then
-    rm -rf $CONTAINER
+    rm -rf "$CONTAINER"
  fi

-  if [[ -d _site ]]; then
-    jekyll clean
+  if [[ -d $dest ]]; then
+    bundle exec jekyll clean
  fi

-  local _temp=$(mktemp -d)
-  cp -r * $_temp
-  cp -r .git $_temp
-  mv $_temp $CONTAINER
+  local _temp="$(mktemp -d)"
+  cp -r ./* "$_temp"
+  cp -r ./.git "$_temp"
+  mv "$_temp" "$CONTAINER"
 }

-
 _build() {
-  cd $CONTAINER
+  cd "$CONTAINER"
  echo "$ cd $(pwd)"

-  bash _scripts/sh/create_pages.sh
-  bash _scripts/sh/dump_lastmod.sh
+  bash "_scripts/sh/create_pages.sh"
+  bash "_scripts/sh/dump_lastmod.sh"

-  CMD+=" -d ${DEST}"
-  echo "\$ $CMD"
-  eval $CMD
-  echo -e "\nBuild success, the site files have been placed in '${DEST}'."
+  cmd+=" -d $dest"

-  if [[ -d ${DEST}/.git ]]; then
-    if [[ ! -z $(git -C $DEST status -s) ]]; then
-      git -C $DEST add .
-      git -C $DEST commit -m "[Automation] Update site files." -q
-      echo -e "\nPlease push the changes of $DEST to remote master branch.\n"
+  if [[ -n $config ]]; then
+    cmd+=" --config $config"
+  fi
+
+  echo "\$ $cmd"
+  eval "$cmd"
+  echo -e "\nBuild success, the site files have been placed in '${dest}'."
+
+  if [[ -d "${dest}/.git" ]]; then
+    if [[ -n $(git -C "$dest" status -s) ]]; then
+      git -C "$dest" add .
+      git -C "$dest" commit -m "[Automation] Update site files." -q
+      echo -e "\nPlease push the changes of $dest to remote master branch.\n"
    fi
  fi

-  cd .. && rm -rf $CONTAINER
+  cd .. && rm -rf "$CONTAINER"
 }

-
 _check_unset() {
-  if [[ -z ${1:+unset} ]]
-  then
+  if [[ -z ${1:+unset} ]]; then
    _help
    exit 1
  fi
 }

-
 main() {
-  while [[ $# -gt 0 ]]
-  do
+  while [[ $# -gt 0 ]]; do
    opt="$1"
    case $opt in
-      -b|--baseurl)
-        _check_unset $2
-        if [[ $2 == \/* ]]
-        then
-          CMD+=" -b $2"
-        else
-          _help
-          exit 1
+      -b | --baseurl)
+        local _baseurl="$2"
+        if [[ -z $_baseurl ]]; then
+          _baseurl='""'
        fi
+        cmd+=" -b $_baseurl"
        shift
        shift
        ;;
-      -d|--destination)
-        _check_unset $2
-        DEST=$(realpath $2)
-        shift;
-        shift;
+      -d | --destination)
+        _check_unset "$2"
+        dest="$(realpath "$2")"
+        shift
+        shift
        ;;
-      -h|--help)
+      --docker)
+        docker=true
+        shift
+        ;;
+      --config)
+        _check_unset "$2"
+        config="$(realpath "$2")"
+        shift
+        shift
+        ;;
+      -h | --help)
        _help
        exit 0
        ;;
@@ -114,6 +136,10 @@ main() {
    esac
  done

+  if $docker; then
+    _install_tools
+  fi
+
  _init
  _build
 }
--- a/tools/deploy.sh
+++ b/tools/deploy.sh
@@ -0,0 +1,67 @@
+#!/bin/bash
+#
+# Deploy the content of _site to 'origin/<pages_branch>'
+#
+# v2.5
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# Published under MIT License
+
+set -eu
+
+PAGES_BRANCH="gh-pages"
+
+_no_branch=false
+_backup_dir="$(mktemp -d)"
+
+init() {
+  if [[ -z $(git branch -av | grep "$PAGES_BRANCH") ]]; then
+    _no_branch=true
+    git checkout -b "$PAGES_BRANCH"
+  else
+    git checkout "$PAGES_BRANCH"
+  fi
+}
+
+backup() {
+  mv _site/* "$_backup_dir"
+  mv .git "$_backup_dir"
+
+  # When adding custom domain from Github website,
+  # the CANME only exist on `gh-pages` branch
+  if [[ -f CNAME ]]; then
+    mv CNAME "$_backup_dir"
+  fi
+}
+
+flush() {
+  rm -rf ./*
+  rm -rf .[^.] .??*
+
+  shopt -s dotglob nullglob
+  mv "$_backup_dir"/* .
+}
+
+deploy() {
+  git config --global user.name "GitHub Actions"
+  git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+  git update-ref -d HEAD
+  git add -A
+  git commit -m "[Automation] Site update No.${GITHUB_RUN_NUMBER}"
+
+  if $_no_branch; then
+    git push -u origin "$PAGES_BRANCH"
+  else
+    git push -f
+  fi
+}
+
+main() {
+  init
+  backup
+  flush
+  deploy
+}
+
+main
--- a/tools/init.sh
+++ b/tools/init.sh
@@ -0,0 +1,90 @@
+#!/bin/bash
+#
+# Init the evrionment for new user.
+#
+# v2.5
+# https://github.com/cotes2020/jekyll-theme-chirpy
+# © 2020 Cotes Chung
+# Published under MIT License
+
+set -eu
+
+ACTIONS_WORKFLOW=pages-deploy.yml
+
+help() {
+  echo "Usage:"
+  echo
+  echo "   bash /path/to/init.sh [options]"
+  echo
+  echo "Options:"
+  echo "     --no-gh              Do not deploy to Github."
+  echo "     -h, --help           Print this help information."
+}
+
+check_init() {
+  local _has_inited=false
+
+  if [[ ! -d docs ]]; then
+    if [[ ! -d .github ]]; then
+      _has_inited=true # --no-gh
+    else
+      if [[ -f .github/workflows/$ACTIONS_WORKFLOW ]]; then
+        # on BSD, the `wc` could contains blank
+        local _count="$(find .github/workflows/ -type f -name "*.yml" | wc -l)"
+        if [[ ${_count//[[:blank:]]/} == 1 ]]; then
+          _has_inited=true
+        fi
+      fi
+    fi
+  fi
+
+  if $_has_inited; then
+    echo "Already initialized."
+    exit 0
+  fi
+}
+
+init_files() {
+
+  if $_no_gh; then
+    rm -rf .github
+  else
+    mv .github/workflows/$ACTIONS_WORKFLOW.hook .
+    rm -rf .github
+    mkdir -p .github/workflows
+    mv ./${ACTIONS_WORKFLOW}.hook .github/workflows/${ACTIONS_WORKFLOW}
+  fi
+
+  rm -f .travis.yml
+  rm -rf _posts/* docs
+
+  git add -A && git add .github -f
+  git commit -m "[Automation] Initialize the environment." -q
+
+  echo "[INFO] Initialization successful!"
+}
+
+check_init
+
+_no_gh=false
+
+while (($#)); do
+  opt="$1"
+  case $opt in
+    --no-gh)
+      _no_gh=true
+      shift
+      ;;
+    -h | --help)
+      help
+      exit 0
+      ;;
+    *)
+      # unknown option
+      help
+      exit 1
+      ;;
+  esac
+done
+
+init_files
--- a/tools/publish.sh
+++ b/tools/publish.sh
@@ -1,98 +0,0 @@
-#!/bin/bash
-#
-# Initial the Categories/Tags pages and Lastmod for posts and then push to remote
-#
-# v2.0
-# https://github.com/cotes2020/jekyll-theme-chirpy
-# © 2019 Cotes Chung
-# Published under MIT License
-
-set -eu
-
-CATEGORIES=false
-TAGS=false
-LASTMOD=false
-
-WORK_DIR=$(dirname $(dirname $(realpath "$0")))
-
-check_status() {
-  local _change=$(git status . -s)
-
-  if [[ ! -z ${_change} ]]; then
-    echo "Warning: Commit the following changes first:"
-    echo "$_change"
-    exit 1
-  fi
-}
-
-
-update_files() {
-  bash _scripts/sh/create_pages.sh
-  bash _scripts/sh/dump_lastmod.sh
-
-  find . | grep -E "(__pycache__|\.pyc|\.pyo$)" | xargs rm -rf
-}
-
-
-commit() {
-  msg="Updated"
-
-  if [[ ! -z $(git status categories -s) ]]; then
-    git add categories/
-    msg+=" the Categories"
-    CATEGORIES=true
-  fi
-
-  if [[ ! -z $(git status tags -s) ]]; then
-    git add tags/
-    if [[ $CATEGORIES = true ]]; then
-      msg+=","
-    else
-      msg+=" the"
-    fi
-    msg+=" Tags"
-    TAGS=true
-  fi
-
-  if [[ ! -z $(git status _data -s) ]]; then
-    git add _data
-    if [[ $CATEGORIES = true || $TAGS = true ]]; then
-      msg+=","
-    else
-      msg+=" the"
-    fi
-    msg+=" Lastmod"
-    LASTMOD=true
-  fi
-
-  if [[ $CATEGORIES = true || $TAGS = true || $LASTMOD = true ]]; then
-    msg+=" for post(s)."
-    git commit -m "[Automation] $msg" -q
-  else
-    msg="Nothing changed."
-  fi
-
-}
-
-
-push() {
-  git push origin master -q
-  echo "[INFO] Published successfully!"
-}
-
-
-main() {
-
-  cd $WORK_DIR
-
-  check_status
-
-  update_files
-
-  commit
-
-  push
-}
-
-
-main
--- a/tools/pv.sh
+++ b/tools/pv.sh
@@ -15,11 +15,12 @@

 set -eu

-WORK_DIR=$(dirname $(dirname $(realpath "$0")))
-URL_FILE=${WORK_DIR}/assets/data/proxy.json
-PV_CACHE=${WORK_DIR}/assets/data/pageviews.json
+WORK_DIR="$(dirname "$(dirname "$(realpath "$0")")")"
+URL_FILE="${WORK_DIR}/_config.yml"
+PV_CACHE="${WORK_DIR}/assets/js/data/pageviews.json"

+PROXY_URL="$(grep "proxy_endpoint:" "$URL_FILE" | sed "s/.*: '//g;s/'.*//")"

-PROXY_URL=$(jq -r '.proxyUrl' $URL_FILE)
+wget "$PROXY_URL" -O "$PV_CACHE"

-wget $PROXY_URL -O $PV_CACHE
+echo "ls $PV_CACHE"
--- a/tools/run.sh
+++ b/tools/run.sh
@@ -12,14 +12,16 @@

 set -eu

-WORK_DIR=$(dirname $(dirname $(realpath "$0")))
+WORK_DIR="$(dirname "$(dirname "$(realpath "$0")")")"

-CONTAINER=.container
+CONTAINER="${WORK_DIR}/.container"
 SYNC_TOOL=_scripts/sh/sync_monitor.sh

 cmd="bundle exec jekyll s"
-realtime=false
+JEKYLL_DOCKER_HOME="/srv/jekyll"

+realtime=false
+docker=false

 _help() {
  echo "Usage:"
@@ -33,34 +35,51 @@ _help() {
  echo "     -h, --help              Print the help information"
  echo "     -t, --trace             Show the full backtrace when an error occurs"
  echo "     -r, --realtime          Make the modified content updated in real time"
+  echo "         --docker            Run within docker"
 }

-
 _cleanup() {
-  if [[ -d _site || -d .jekyll-cache ]]; then
-    jekyll clean
-  fi
-
-  rm -rf ${WORK_DIR}/${CONTAINER}
+  rm -rf "$CONTAINER"
  ps aux | grep fswatch | awk '{print $2}' | xargs kill -9 > /dev/null 2>&1
 }

+_setup_docker() {
+  # docker image `jekyll/jekyll` based on Alpine Linux
+  echo "http://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories
+  ## CN Apline sources mirror
+  # sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories
+  apk update
+  apk add yq
+}

 _init() {
+  cd "$WORK_DIR"

-  if [[ -d ${WORK_DIR}/${CONTAINER} ]]; then
-    rm -rf ${WORK_DIR}/${CONTAINER}
+  if [[ -f Gemfile.lock ]]; then
+    rm -f Gemfile.lock
  fi

-  temp=$(mktemp -d)
-  cp -r ${WORK_DIR}/* $temp
-  cp -r ${WORK_DIR}/.git $temp
-  mv $temp ${WORK_DIR}/${CONTAINER}
+  if [[ -d $CONTAINER ]]; then
+    rm -rf "$CONTAINER"
+  fi
+
+  mkdir "$CONTAINER"
+  cp -r ./* "$CONTAINER"
+  cp -r ./.git "$CONTAINER"
+
+  if $docker; then
+    local _image_user=$(stat -c "%U" "$JEKYLL_DOCKER_HOME"/.)
+
+    if [[ $_image_user != $(whoami) ]]; then
+      # under Docker for Linux
+      chown -R "$(stat -c "%U:%G" "$JEKYLL_DOCKER_HOME"/.)" "$CONTAINER"
+    fi
+
+  fi

  trap _cleanup INT
 }

-
 _check_unset() {
  if [[ -z ${1:+unset} ]]; then
    _help
@@ -68,52 +87,71 @@ _check_unset() {
  fi
 }

-
 _check_command() {
-  if [[ -z $(command -v $1) ]]; then
+  if [[ -z $(command -v "$1") ]]; then
    echo "Error: command '$1' not found !"
    echo "Hint: Get '$1' on <$2>"
    exit 1
  fi
 }

-
-main() {
-  _init
-
-  cd ${WORK_DIR}/${CONTAINER}
+_run() {
+  cd "$CONTAINER"
  bash _scripts/sh/create_pages.sh
  bash _scripts/sh/dump_lastmod.sh

-  if [[ $realtime = true ]]; then
-    fswatch -0 -e "\\$CONTAINER" -e "\.git" ${WORK_DIR} | xargs -0 -I {} bash ./${SYNC_TOOL} {} $WORK_DIR . &
+  if $realtime; then
+
+    exclude_regex="\/\..*"
+
+    if [[ $OSTYPE == "darwin"* ]]; then
+      exclude_regex="/\..*" # darwin gcc treat regex '/' as character '/'
+    fi
+
+    fswatch -e "$exclude_regex" -0 -r \
+      --event Created --event Removed \
+      --event Updated --event Renamed \
+      --event MovedFrom --event MovedTo \
+      "$WORK_DIR" | xargs -0 -I {} bash "./${SYNC_TOOL}" {} "$WORK_DIR" . &
+  fi
+
+  if $docker; then
+    cmd+=" -H 0.0.0.0"
+  else
+    cmd+=" -l -o"
  fi

  echo "\$ $cmd"
-  eval $cmd
+  eval "$cmd"
 }

+main() {
+  if $docker; then
+    _setup_docker
+  fi

-while (( $# ))
-do
+  _init
+  _run
+}
+
+while (($#)); do
  opt="$1"
  case $opt in
-    -H|--host)
-      _check_unset $2
+    -H | --host)
+      _check_unset "$2"
      cmd+=" -H $2"
      shift # past argument
      shift # past value
      ;;
-    -P|--port)
-      _check_unset $2
+    -P | --port)
+      _check_unset "$2"
      cmd+=" -P $2"
      shift
      shift
      ;;
-    -b|--baseurl)
-      _check_unset $2
-      if [[ $2 == \/* ]]
-      then
+    -b | --baseurl)
+      _check_unset "$2"
+      if [[ $2 == \/* ]]; then
        cmd+=" -b $2"
      else
        _help
@@ -122,16 +160,20 @@ do
      shift
      shift
      ;;
-    -t|--trace)
+    -t | --trace)
      cmd+=" -t"
      shift
      ;;
-    -r|--realtime)
-      _check_command fswatch 'http://emcrisostomo.github.io/fswatch/'
+    -r | --realtime)
+      _check_command fswatch "http://emcrisostomo.github.io/fswatch/"
      realtime=true
      shift
      ;;
-    -h|--help)
+    --docker)
+      docker=true
+      shift
+      ;;
+    -h | --help)
      _help
      exit 0
      ;;
@@ -143,5 +185,4 @@ do
  esac
 done

-
 main
--- a/tools/test.sh
+++ b/tools/test.sh
@@ -4,7 +4,7 @@
 #
 # Requirement: https://github.com/gjtorikian/html-proofer
 #
-# Usage: bash /path/to/test.sh
+# Usage: bash /path/to/test.sh [indicated path]
 #
 # v2.0
 # https://github.com/cotes2020/jekyll-theme-chirpy
@@ -14,6 +14,10 @@
 DEST=_site
 URL_IGNORE=cdn.jsdelivr.net

+if [[ -n $1 && -d $1 ]]; then
+  DEST=$1
+fi
+
 bundle exec htmlproofer $DEST \
  --disable-external \
  --check-html \
Author	SHA1	Message	Date
Cotes Chung	a95d6d7101	Add `--config` option to the build-tool.	2020-10-12 14:19:01 +08:00
Cotes Chung	c98fd19900	Remove comments from HTML.	2020-10-12 14:18:02 +08:00
Cotes Chung	3c2675c4a1	Upgrade GA tag (analytics.js) to the latest tag (gtag.js)	2020-10-12 06:19:11 +08:00
Cotes Chung	db5a58638d	Add more class to specify image position.	2020-10-10 20:18:24 +08:00
Cotes Chung	2a2bc1ee65	Fix compatibility with Docker Desktop (for Mac) on Docker Desktop CE (Mac) 2.4.0.0 - command `mv` will cause permission preserve error - command `chown` will get I/O error	2020-10-10 18:08:29 +08:00
Cotes Chung	e806a8556b	Fix files r/w permissions under Linux Docker (#145 ) also improve the scripts	2020-10-10 00:33:13 +08:00
Cotes Chung	049b486f82	Add docker support instructions to the docs.	2020-10-08 21:30:27 +08:00
Cotes Chung	8f11f91677	Add `docker` option to the tools.	2020-10-08 21:14:33 +08:00
Cotes Chung	d314c02a13	Drop the deprecating command `set-env` in actions workflow. replace with environment files	2020-10-08 02:42:57 +08:00
Cotes Chung	ea5b6cf1f6	Specify the image location gracefully.	2020-10-08 02:42:57 +08:00
Cotes Chung	cb908bbb2b	Added caption sytle for hyperlinked images (#144 ).	2020-10-07 12:24:44 +08:00
Cotes Chung	c221a3e0bc	Reduce image caption margin.	2020-10-06 23:41:29 +08:00
Cotes Chung	ddc1149fb5	Specify the image width.	2020-10-06 23:13:01 +08:00
Cotes Chung	944d0ad724	Add styles to image caption (#144 )	2020-10-06 23:13:01 +08:00
Cotes Chung	67d962d707	Fix the bundle cache path for CD hook.	2020-10-03 16:45:17 +08:00
Cotes Chung	04ad7bf432	Update the docs & reduce the image size.	2020-09-27 13:53:57 +08:00
Cotes Chung	a0f80debb1	Remove the tool that may confuse newbie.	2020-09-27 12:42:26 +08:00
Cotes Chung	f932cf0d00	Lazy load the feature image.	2020-09-20 17:58:52 +08:00
Cotes Chung	8484a34195	Fix copy link function (#133 )	2020-09-17 19:20:50 +08:00
Cotes Chung	2cf5a58adf	Install `yq` by APT on ubuntu of gh-actions. `brew intall` on Ubuntu is too slow (about 1 min)	2020-09-17 13:54:12 +08:00
Cotes Chung	6f7ca13507	Add `yq` installation on travis config.	2020-09-17 02:25:57 +08:00
Cotes Chung	766e597a3b	Update the docs for installing `yq`.	2020-09-17 02:10:17 +08:00
Cotes Chung	d0d1e02763	Improve the CD workflow and enhance the related tools.	2020-09-17 01:28:44 +08:00
Honnix	643c8177be	Use yq to process YAML content (#130 ) Use yq to process YAML content.	2020-09-17 01:20:04 +08:00
Cotes Chung	092ab5bbdb	Fix the compatibility of fswatch under Linux. (#112 )	2020-09-15 04:59:41 +08:00
Cotes Chung	e47f73f772	Normalize the CSS rgb function (#128 )	2020-09-14 20:41:37 +08:00
Cotes Chung	2d8854ba74	Fix the overlap of footnote in vertical direction. (#123 )	2020-09-11 23:25:54 +08:00
김동주	36fab37225	Fix typo change function name "deoply" -> "deploy" @ ln45, 64	2020-09-11 15:01:47 +08:00
Cotes Chung	13abcd5958	Improve the init tool & fix the deploy tool.	2020-09-04 20:38:20 +08:00
Cotes Chung	9dcab7ac1f	Improve the image style.	2020-09-02 22:07:14 +08:00
Cotes Chung	d78f034f5d	Fix condition in page creator script.	2020-09-01 21:37:08 +08:00
Cotes Chung	c473771af4	Pretty shell format.	2020-09-01 15:04:25 +08:00
Cotes Chung	252e33b502	Improve the deploy tool	2020-09-01 11:53:14 +08:00
Cotes Chung	232dd36b78	Enhance the script to remove the space between `categories`/`tags` and colon in YAML.	2020-09-01 01:23:15 +08:00
Cotes Chung	2d7df50774	Fix the path contains spaces lead to tool script failure (#117 )	2020-08-30 15:35:02 +08:00
Cotes Chung	31656e8cda	Add more details to the bug-issue template.	2020-08-30 14:41:10 +08:00
Cotes Chung	e96f9051c0	Fix the exclusion regex rule of swatch (#112 )	2020-08-30 01:20:55 +08:00
Cotes Chung	cb461df071	Extend the image style to the layout `page` (#113 )	2020-08-28 23:02:28 +08:00
Cotes Chung	e439e65258	Reduce the font size of inline code.	2020-08-23 16:09:35 +08:00
Cotes Chung	3a449672cb	Upgrade web-fonts source.	2020-08-23 15:19:33 +08:00
Cotes Chung	7bb861b573	Beautify the layout for posts heading and preview-image.	2020-08-21 23:03:05 +08:00
Cotes Chung	f0b4e30363	Improve the layout of list.	2020-08-21 23:03:05 +08:00
Cotes Chung	717a501c36	Update the docs. - Optimize the code style of markdown list - Increase post contents (#104, #100)	2020-08-21 22:46:46 +08:00
Cotes Chung	3ddf5047b5	Add more option to script tool.	2020-08-21 13:43:10 +08:00
Cotes Chung	31ac709e04	Stop CI on branch 'production'.	2020-08-21 01:40:56 +08:00
Cotes Chung	a1b2c71b89	Increase the margin between lists.	2020-08-21 01:26:18 +08:00
Cotes Chung	e9c29aa1b5	Merge branch 'codacy-badger-codacy-badge'	2020-08-21 00:47:51 +08:00
The Codacy Badger	f947c3f3d3	Add Codacy badge	2020-08-21 00:47:43 +08:00
Cotes Chung	78e8ffd7ba	Merge branch 'code-quality'	2020-08-21 00:46:48 +08:00
Cotes Chung	60a8a2fa41	Improve markdown code style.	2020-08-21 00:45:56 +08:00
Cotes Chung	9e14673349	Improve SASS code style.	2020-08-20 02:29:13 +08:00
Cotes Chung	10ab9d3364	Improve the Shell code style.	2020-08-19 23:45:10 +08:00
Cotes Chung	038bccb3ca	Fix JS object injection.	2020-08-19 23:45:10 +08:00
Cotes Chung	9b35380849	Improve JS code style.	2020-08-19 23:45:10 +08:00
Cotes Chung	a8f8bbaa1c	Fix the unsupported code snippets in rouge. (#101 )	2020-08-15 21:10:54 +08:00
Cotes Chung	188d8ffc69	Resume the min-width of the tables. It was lost by mistake while fixing #85	2020-08-15 01:01:27 +08:00
Cotes Chung	0809e2b132	Update travis config to fit with the gitlab flow.	2020-08-14 01:47:12 +08:00
Cotes Chung	ab0adc36cf	Update the PR issue template.	2020-08-14 01:42:35 +08:00
Cotes Chung	d4397dff08	Improved the pin for posts (#99 ).	2020-08-11 18:15:45 +08:00
Cotes Chung	db06610fd6	Update the docs.	2020-08-11 05:58:59 +08:00
Cotes Chung	c242cf8455	Standardize posts' file name in tool scripts.	2020-08-11 05:53:00 +08:00
Cotes Chung	ad7d8ac1c9	Merge branch 'release/2.5'	2020-08-03 03:44:13 +08:00
Cotes Chung	adff74b27b	Update docs for v2.5	2020-08-03 03:28:53 +08:00
Cotes Chung	1c3c22bb68	Merge branch 'feature/improve-typography' into develop	2020-08-03 02:24:12 +08:00
Cotes Chung	628d4de095	Merge branch 'feature/build-by-gh-actions' into develop	2020-08-03 02:19:13 +08:00
Cotes Chung	48b3df2ea7	Added new tools and workflow.	2020-08-03 02:05:15 +08:00
Cotes Chung	3b0cf90f5c	Improved the build tool. Allows to specify an empty base-url.	2020-08-02 01:48:47 +08:00
Cotes Chung	544f72efff	Optimized font colors.	2020-07-30 05:28:16 +08:00
Cotes Chung	112091cbf6	Improved the posts layout.	2020-07-30 05:12:36 +08:00
Cotes Chung	b04bb847b1	Merge branch 'hotfix/2.4.2'	2020-07-30 02:50:19 +08:00
Cotes Chung	a71bade6eb	Merge tag 'v2.4.2' into develop Fix the CI workflow	2020-07-30 02:50:19 +08:00
Cotes Chung	6ef97f1fad	Fixed CI workflow.	2020-07-30 02:48:08 +08:00
Cotes Chung	4675d42f90	Merge branch 'feature/improve-pv-fetching' into develop	2020-07-26 22:25:39 +08:00
Cotes Chung	a624b9a472	Update pv fetching tool.	2020-07-26 22:25:26 +08:00
Cotes Chung	ad48a9ab06	Fixed empty PV issue.	2020-07-26 22:25:26 +08:00
Cotes Chung	4cff8879ac	Merge tag 'v2.4.1' into develop use git-flow to improve development	2020-07-26 18:31:56 +08:00