fix: gpg encrypt permission warning message, update Kubernetes deployment example

docs/how-tos/deploy-on-kubernetes.md

@@ -30,10 +30,7 @@ spec:
         command:
         - /bin/sh
         - -c
-        - bkup
-        - backup
-        - --storage
-        - s3
+        - backup --storage s3
         resources:
           limits:
             memory: "128Mi"
@@ -87,10 +84,7 @@ spec:
         - /bin/sh
         - -c
         - bkup
-        - backup
-        - --storage
-        - ssh
-        - --disable-compression
+        - backup --storage ssh --disable-compression
         resources:
           limits:
             memory: "128Mi"
@@ -145,10 +139,7 @@ spec:
         - /bin/sh
         - -c
         - bkup
-        - restore
-        - --storage
-        - ssh
-        - --file store_20231219_022941.sql.gz
+        - restore --storage ssh --file store_20231219_022941.sql.gz
         resources:
           limits:
             memory: "128Mi"
@@ -205,10 +196,7 @@ spec:
             - /bin/sh
             - -c
             - bkup
-            - backup
-            - --storage
-            - ssh
-            - --disable-compression
+            - backup --storage ssh --disable-compression
             resources:
               limits:
                 memory: "128Mi"
@@ -272,11 +260,7 @@ spec:
               command:
                 - /bin/sh
                 - -c
-                - bkup
-                - backup
-                - --storage
-                - ssh
-                - --disable-compression
+                - backup --storage ssh --disable-compression
               resources:
                 limits:
                   memory: "128Mi"

docs/how-tos/migrate.md

@@ -73,3 +73,50 @@ SOURCE_DB_PASSWORD=password
  -v $PWD/backup:/backup/ \
  jkaninda/pg-bkup migrate -d database_name
 ```
+
+## Kubernetes
+
+```yaml
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: migrate-db
+spec:
+  ttlSecondsAfterFinished: 100
+  template:
+    spec:
+      containers:
+      - name: pg-bkup
+        # In production, it is advised to lock your image tag to a proper
+        # release version instead of using `latest`.
+        # Check https://github.com/jkaninda/pg-bkup/releases
+        # for a list of available releases.
+        image: jkaninda/pg-bkup
+        command:
+        - /bin/sh
+        - -c
+        - migrate -d targetdb
+        resources:
+          limits:
+            memory: "128Mi"
+            cpu: "500m"
+        env:
+        ## Target DB
+          - name: DB_HOST
+            value: "postgres-target"
+          - name: DB_USERNAME
+            value: "postgres"
+          - name: DB_PASSWORD
+            value: "password"
+          ## Source DB
+          - name: SOURCE_DB_HOST
+            value: "postgres-source"
+          - name: SOURCE_DB_NAME
+            value: "sourcedb"
+          - name: SOURCE_DB_USERNAME
+            value: "postgres"
+          # Please use secret!
+          - name: SOURCE_DB_PASSWORD
+            value: "password"
+      restartPolicy: Never
+```