docs: add Kubernetes restore Job example

docs/how-tos/restore-from-ssh.md

@@ -47,4 +47,50 @@ services:
       - web
 networks:
   web:
+```
+## Restore on Kubernetes
+
+Simple Kubernetes restore Job:
+
+```yaml
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: restore-db
+spec:
+  template:
+    spec:
+      containers:
+        - name: pg-bkup
+          image: jkaninda/pg-bkup
+          command:
+            - /bin/sh
+            - -c
+            - bkup restore -s ssh -f store_20231219_022941.sql.gz
+          env:
+            - name: DB_PORT
+              value: "5432"
+            - name: DB_HOST
+              value: ""
+            - name: DB_NAME
+              value: ""
+            - name: DB_USERNAME
+              value: ""
+            # Please use secret!
+            - name: DB_PASSWORD
+              value: ""
+            - name: SSH_HOST_NAME
+              value: ""
+            - name: SSH_PORT
+              value: "22"
+            - name: SSH_USER
+              value: "xxx"
+            - name: SSH_REMOTE_PATH
+              value: "/home/jkaninda/backups"
+            - name: AWS_ACCESS_KEY
+              value: "xxxx"
+            - name: SSH_IDENTIFY_FILE
+              value: "/tmp/id_ed25519"
+      restartPolicy: Never
+  backoffLimit: 4
 ```