remove separate db deployment

cluster/apps/paperless-ngx/paperless-ngx.yml

@@ -14,16 +14,14 @@ spec:
         app: paperless-ngx
     spec:
       initContainers:
-      - name: wait-for-db
-        image: busybox
-        command:
-        - sh
-        - -c
-        - |
-          until nc -z -v -w30 paperless-ngx-db-service 6379; do
-            echo "Waiting for database to be ready..."
-            sleep 2
-          done
+      - name: paperless-ngx-db
+        image: docker.io/library/redis:7
+        restartPolicy: Always
+        ports:
+        - containerPort: 6379
+        volumeMounts:
+        - name: redis
+          mountPath: /data
       containers:
       - name: paperless-ngx
         image: ghcr.io/paperless-ngx/paperless-ngx:2.16.2
@@ -31,7 +29,7 @@ spec:
         - containerPort: 8000
         env:
         - name: PAPERLESS_REDIS
-          value: "redis://paperless-ngx-db-service:6379"
+          value: "redis://localhost:6379"
         - name: PAPERLESS_URL
           value: "https://ngx.akshun-lab.uk"
         - name: PAPERLESS_CSRF_TRUSTED_ORIGINS
@@ -57,3 +55,6 @@ spec:
       - name: data
         persistentVolumeClaim:
           claimName: longhorn-paperless-data
+      - name: redis
+        persistentVolumeClaim:
+          claimName: longhorn-paperless-redis