Add initial Helm chart for BookStack deployment with configuration files

bookstack/templates/secret-db.yaml

@@ -0,0 +1,21 @@
+{{- /*
+Einmaliges Secret: wird nur angelegt, wenn es noch nicht existiert (lookup).
+*/}}
+{{- $secretName := include "bookstack.db.secretName" . }}
+{{- if and (not (lookup "v1" "Secret" .Release.Namespace $secretName)) .Values.db.enabled }}
+apiVersion: v1
+kind: Secret
+type: Opaque
+metadata:
+  name: {{ $secretName }}
+  namespace: {{ .Release.Namespace }}
+  annotations:
+    helm.sh/resource-policy: keep
+  labels:
+    {{- include "bookstack.labels" . | nindent 4 }}
+    app.kubernetes.io/component: database
+data:
+  mariadb-root-password: {{ default (randAlphaNum 32) .Values.db.auth.rootPassword | b64enc | quote }}
+  mariadb-password: {{ default (randAlphaNum 32) .Values.db.auth.password | b64enc | quote }}
+  mariadb-replication-password: {{ default (randAlphaNum 32) .Values.db.auth.replicationPassword | b64enc | quote }}
+{{- end }}