title: Multiple MariaDB databases in Docker
body: <p>Using Docker (v.2) I have a database set up in my <code>docker-compose.yml</code>:</p>
  
  <pre><code>mysql:
      image: mariadb:latest
      ports:
        - 3306:3306
      environment:
        MYSQL_ROOT_PASSWORD: 'test'
        MYSQL_DATABASE: 'test'
        MYSQL_USER: 'test'
        MYSQL_PASSWORD: 'test'
  </code></pre>
  
  <p>This works fine. What do I need to do to create another database in the same container?</p>