Update README.md to enhance documentation for BookStack Helm Chart

README.md

@@ -1,3 +1,142 @@
-# bookstack-chart
+# BookStack Helm Chart
 
-This is an unofficial Helm Chart for bookstackapp.com
+Deploys the BookStack wiki platform on Kubernetes with optional MariaDB and Redis sub‑charts.
+
+---
+
+## Versioning
+
+The chart uses **dual semantic versioning**:
+
+```
+<chart semver>+<upstream BookStack semver>
+# example: 1.2.3+25.2.3
+```
+
+This allows Helm to track compatibility changes independently from upstream BookStack releases.
+
+---
+
+## Prerequisites
+
+* Helm 3
+* Kubernetes 1.24+
+* (Optional) External MariaDB 10.5+ and/or Redis 6+ instances if you disable the bundled sub‑charts
+
+---
+
+## Quick start
+
+```bash
+helm repo add morlana https://charts.morlana.net
+helm repo update
+
+helm install bookstack morlana/bookstack \
+  --namespace bookstack --create-namespace
+```
+
+The first run generates a **Laravel APP\_KEY** secret. The deployment automatically restarts once the key is present.
+
+---
+
+## Upgrading
+
+```bash
+helm upgrade bookstack morlana/bookstack -n bookstack --reuse-values
+```
+
+Helm recognises new chart versions that follow the `x.y.z+<bookstack>` scheme. Check the upstream project’s release notes as well as the chart’s `CHANGELOG.md` before upgrading across major versions.
+
+---
+
+## Uninstalling
+
+```bash
+helm uninstall bookstack -n bookstack
+```
+
+PersistentVolumeClaims and One-Time generated secrets are **not** removed automatically.
+
+---
+
+## Configuration (excerpt)
+
+| Key                             | Description                                         | Default               |
+| ------------------------------- | --------------------------------------------------- | --------------------- |
+| `bookstack.image.repository`    | Container image repository                          | `solidnerd`           |
+| `bookstack.image.name`          | Image name                                          | `bookstack`           |
+| `bookstack.image.tag`           | Image tag (defaults to upstream version when empty) | `""`                  |
+| `bookstack.replicaCount`        | Number of pods                                      | `1`                   |
+| `bookstack.config.app.url`      | Public URL users will access                        | `https://example.com` |
+| `bookstack.config.app.key`      | Laravel APP\_KEY (auto‑generated if empty)          | `""`                  |
+| `bookstack.mail.host`           | SMTP host (set to enable e‑mail)                    | `""`                  |
+| `bookstack.mail.port`           | SMTP port                                           | `1025`                |
+| `bookstack.persistence.enabled` | Persist uploads and storage                         | `true`                |
+| `bookstack.persistence.size`    | PVC size                                            | `10Gi`                |
+| `service.type`                  | Kubernetes Service type                             | `ClusterIP`           |
+| `ingress.enabled`               | Create an Ingress                                   | `false`               |
+| `db.enabled`                    | Deploy bundled MariaDB                              | `true`                |
+| `redis.enabled`                 | Deploy bundled Redis                                | `true`                |
+
+Override values with `--set key=value` or put them in `my-values.yaml` and pass `-f`.
+
+---
+
+## Persistence
+
+A single ReadWriteMany PVC is created by default so all replicas share the same data. Customise size, StorageClass or accessMode via `bookstack.persistence.*`.
+
+---
+
+## Ingress example
+
+```yaml
+ingress:
+  enabled: true
+  class: nginx
+  hostname: wiki.example.com
+  tls:
+    - hosts: [wiki.example.com]
+      secretName: wiki-tls
+```
+
+---
+
+## Using external services
+
+Disable the sub‑charts and point BookStack at existing database/redis servers:
+
+```yaml
+db:
+  enabled: false
+
+bookstack:
+  externalDatabase:
+    host: mariadb.example.com
+    database: bookstack
+    username: bookstack
+    password: supersecret
+
+redis:
+  enabled: false
+
+bookstack:
+  externalRedis:
+    servers: redis://:password@redis.example.com:6379/0
+```
+
+---
+
+## Backup & restore
+
+* **Database**: use `mysqldump` / `mysql` against the MariaDB service (or your external DB).
+* **Application data**: back up the BookStack PVC with your preferred tool (Velero, restic, etc.).
+
+---
+
+## Contributing
+
+Bug reports and pull requests are welcome in the [chart repository](https://git.morlana.online/f.weber/bookstack-chart).
+For issues specific to BookStack itself, please use the [upstream project’s tracker](https://github.com/BookStackApp/BookStack/issues).
+
+Happy documenting! 📚