docs: update README

README.md

@@ -33,6 +33,7 @@ This tool supports backing up the following files or directories.
 
 - `db.sqlite3` (for SQLite database)
 - `db.dump` (for PostgreSQL database)
+- `db.sql` (for MySQL / MariaDB database)
 - `config.json`
 - `rsa_key*` (multiple files)
 - `attachments` (directory)
@@ -493,6 +494,7 @@ We recommend re-downloading the `docker-compose.yml` file, replacing your enviro
 - [Run as non-root user](docs/run-as-non-root-user.md)
 - [Multiple remote destinations](docs/multiple-remote-destinations.md)
 - [Using the PostgreSQL backend](docs/using-the-postgresql-backend.md)
+- [Using the MySQL(MariaDB) backend](docs/using-the-mysql-or-mariadb-backend.md)
 
 <br>
 

README_zh.md

@@ -33,6 +33,7 @@
 
 - `db.sqlite3` (SQLite 数据库)
 - `db.dump` (PostgreSQL 数据库)
+- `db.sql` (MySQL / MariaDB 数据库)
 - `config.json`
 - `rsa_key*` (多个文件)
 - `attachments` (目录)
@@ -490,6 +491,7 @@ docker run --rm -it -e MAIL_SMTP_VARIABLES='<your smtp variables>' -e MAIL_TO='<
 - [以非 root 用户运行](docs/run-as-non-root-user.md)
 - [备份到多个远程目标](docs/multiple-remote-destinations.md)
 - [使用 PostgreSQL 数据库](docs/using-the-postgresql-backend.md)
+- [使用 MySQL(MariaDB) 数据库](docs/using-the-mysql-or-mariadb-backend.md)
 
 <br>
 

docs/using-the-mysql-or-mariadb-backend.md

@@ -0,0 +1,67 @@
+# Using the MySQL(MariaDB) backend
+
+Now supports MySQL(MariaDB) backend.
+
+<br>
+
+
+
+## Environment Variables
+
+#### DB_TYPE
+
+Set to `mysql` switch to MySQL(MariaDB) database.
+
+Default: `sqlite`
+
+#### MYSQL_HOST
+
+MySQL(MariaDB) host, **required**.
+
+#### MYSQL_PORT
+
+MySQL(MariaDB) port.
+
+Default: `3306`
+
+#### MYSQL_DATABASE
+
+MySQL(MariaDB) database name.
+
+Default: `vaultwarden`
+
+#### MYSQL_USERNAME
+
+MySQL(MariaDB) username.
+
+Default: `vaultwarden`
+
+#### MYSQL_PASSWORD
+
+MySQL(MariaDB) password, **required**.
+
+<br>
+
+
+
+## Backup
+
+Specify the above environment variables to switch to the MySQL(MariaDB) database.
+
+<br>
+
+
+
+## Restore
+
+When restoring, also specify the above environment variables to switch to the MySQL(MariaDB) database.
+
+1. Ensure that the database is accessible.
+
+Perhaps you will use the `docker-compose up -d [services name]` command to start the database separately.
+
+2. Verify that the `MYSQL_HOST` you are using is accessible to.
+
+If your database is running in docker-compose, you need to find the corresponding network name via `docker network ls`  and add `--network=[name]` to the restore command to specify the network name.
+
+3. Restore and restart the container.