Extending Docker

The default volume driver

Before we start using the third-party volume plugins, we should take a look at what ships with Docker and how volumes solve the scenario we just worked through. Again, we will be using a docker-compose.yml file; however, this time, we will add a few lines to create and mount volumes:

version: '2'
services:
  wordpress:
    container_name: my-wordpress-app
    image: wordpress
    ports: 
      - "80:80"
    links:
      - mysql
    environment:
      WORDPRESS_DB_HOST: "mysql:3306"
      WORDPRESS_DB_PASSWORD: "password"
    volumes:
      - "uploads:/var/www/html/wp-content/uploads/"
  mysql:
    container_name: my-wordpress-database
    image: mysql
    environment:
      MYSQL_ROOT_PASSWORD: "password"
    volumes:
      - "database:/var/lib/mysql"
volumes:
  uploads:
    driver: local
  database:
 driver: ...