[Unit]
Description=MariaDB
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
Restart=always
ExecStart=/usr/bin/docker run --rm
    --name=mariadb
    -p 3306:3306
    -e MYSQL_ROOT_PASSWORD=root
    -e MYSQL_DATABASE=test
    -e MYSQL_USER=user
    -e MYSQL_PASSWORD=user
    -v /var/lib/mysql:/var/lib/mysql
    mariadb:latest
ExecStop=-/usr/bin/docker stop mariadb

[Install]
WantedBy=multi-user.target