feat(k8s/paperless): add paperless-ngx stack (deployment scaled to 0 for data migration)

kubernetes/app/paperless/statefulset-db.yaml

@@ -0,0 +1,65 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: paperless-db
+  namespace: paperless
+  labels:
+    app: paperless-db
+spec:
+  serviceName: paperless-db
+  replicas: 1
+  selector:
+    matchLabels:
+      app: paperless-db
+  template:
+    metadata:
+      labels:
+        app: paperless-db
+    spec:
+      securityContext:
+        runAsUser: 999
+        runAsGroup: 999
+        fsGroup: 999
+      containers:
+        - name: postgres
+          image: postgres:18
+          env:
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: paperless-credentials
+                  key: DB_USERNAME
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: paperless-credentials
+                  key: DB_PASSWORD
+            - name: POSTGRES_DB
+              valueFrom:
+                secretKeyRef:
+                  name: paperless-credentials
+                  key: DB_DATABASE_NAME
+            - name: PGDATA
+              value: /var/lib/postgresql/data/pgdata
+            - name: TZ
+              value: Europe/Kyiv
+          ports:
+            - containerPort: 5432
+          volumeMounts:
+            - name: data
+              mountPath: /var/lib/postgresql/data
+          resources:
+            requests:
+              cpu: 50m
+              memory: 256Mi
+            limits:
+              memory: 1Gi
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+      spec:
+        accessModes: ["ReadWriteOnce"]
+        storageClassName: nfs-synology-ssd
+        resources:
+          requests:
+            storage: 5Gi