Add SSH storage, add database backup encrypt and decrypt

docs/how-tos/restore-from-s3.md

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+---
+title: Restore database from AWS S3
+layout: default
+parent: How Tos
+nav_order: 5
+---
+
+# Restore database from S3 storage
+
+To restore the database, you need to add `restore` subcommand to `mysql-bkup` or `bkup` and specify the file to restore by adding `--file store_20231219_022941.sql.gz`.
+
+{: .note }
+It supports __.sql__ and __.sql.gz__ compressed file.
+
+### Restore
+
+```yml
+services:
+  mysql-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/mysql-bkup/releases
+    # for a list of available releases.
+    image: jkaninda/mysql-bkup
+    container_name: mysql-bkup
+    command:
+      - /bin/sh
+      - -c
+      - mysql-bkup restore --storage s3 -d my-database -f store_20231219_022941.sql.gz --path /my-custom-path
+    volumes:
+      - ./backup:/backup
+    environment:
+      - DB_PORT=3306
+      - DB_HOST=mysql
+      - DB_NAME=database
+      - DB_USERNAME=username
+      - DB_PASSWORD=password
+      ## AWS configurations
+      - AWS_S3_ENDPOINT=https://s3.amazonaws.com
+      - AWS_S3_BUCKET_NAME=backup
+      - AWS_REGION="us-west-2"
+      - AWS_ACCESS_KEY=xxxx
+      - AWS_SECRET_KEY=xxxxx
+      ## In case you are using S3 alternative such as Minio and your Minio instance is not secured, you change it to true
+      - AWS_DISABLE_SSL="false"
+    # mysql-bkup container must be connected to the same network with your database
+    networks:
+      - web
+networks:
+  web:
+```