Refactor Nextcloud configuration: update environment variable keys, enhance Ingress annotations, and add database initialization job with kustomization support.

apps/nextcloud/init/db-init-job.yaml

@@ -0,0 +1,45 @@
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: nextcloud-db-init
+spec:
+  template:
+    spec:
+      containers:
+        - name: db-init
+          image: postgres:15
+          command: ["/bin/bash", "-c"]
+          args:
+            - |
+              PGPASSWORD=${POSTGRES_ADMIN_PASSWORD} psql -h ${NEXTCLOUD_DB_HOST} -U postgres <<EOF
+              CREATE USER ${NEXTCLOUD_DB_USER} WITH ENCRYPTED PASSWORD '${NEXTCLOUD_DB_PASSWORD}';
+              CREATE DATABASE ${NEXTCLOUD_DB_NAME} WITH OWNER ${NEXTCLOUD_DB_USER};
+              GRANT ALL PRIVILEGES ON DATABASE ${NEXTCLOUD_DB_NAME} TO ${NEXTCLOUD_DB_USER};
+              EOF
+          env:
+            - name: POSTGRES_ADMIN_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: secrets
+                  key: POSTGRES_ADMIN_PASSWORD
+            - name: NEXTCLOUD_DB_HOST
+              valueFrom:
+                configMapKeyRef:
+                  name: config
+                  key: NEXTCLOUD_DB_HOST
+            - name: NEXTCLOUD_DB_NAME
+              valueFrom:
+                configMapKeyRef:
+                  name: config
+                  key: NEXTCLOUD_DB_NAME
+            - name: NEXTCLOUD_DB_USER
+              valueFrom:
+                configMapKeyRef:
+                  name: config
+                  key: NEXTCLOUD_DB_USER
+            - name: NEXTCLOUD_DB_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: secrets
+                  key: NEXTCLOUD_DB_PASSWORD
+      restartPolicy: OnFailure