Add SSH storage, add database backup encrypt and decrypt

docs/how-tos/encrypt-backup.md

@@ -0,0 +1,54 @@
+---
+title: Encrypt backups using GPG
+layout: default
+parent: How Tos
+nav_order: 7
+---
+# Encrypt backup
+
+The image supports encrypting backups using GPG out of the box. In case a `GPG_PASSPHRASE` environment variable is set, the backup archive will be encrypted using the given key and saved as a sql.gpg file instead or sql.gz.gpg.
+
+{: .warning }
+To restore an encrypted backup, you need to provide the same GPG passphrase used during backup process.
+
+To decrypt manually, you need to install gnupg
+
+### Decrypt backup
+
+```shell
+gpg --batch --passphrase "my-passphrase" \
+--output database_20240730_044201.sql.gz \
+--decrypt database_20240730_044201.sql.gz.gpg
+```
+
+### Backup
+
+```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 backup -d database
+    volumes:
+      - ./backup:/backup
+    environment:
+      - DB_PORT=3306
+      - DB_HOST=mysql
+      - DB_NAME=database
+      - DB_USERNAME=username
+      - DB_PASSWORD=password
+      ## Required to encrypt backup
+      - GPG_PASSPHRASE=my-secure-passphrase
+    # mysql-bkup container must be connected to the same network with your database
+    networks:
+      - web
+networks:
+  web:
+```