Setting Up an Environment with Docker Compose

In your root directory create your docker-compose.yml file:

• Make sure you are using version 3.3.
• The file will have two services: db and webapp.
• The db will use mysql:5.7 for the image.
• Create a volume called db_data that maps to /var/lib/mysql on the container.
• Use restart: always to make sure the container always starts up.
• Create the following environmental variables:
  • MYSQL_ROOT_PASSWORD: R00tP4ssw0rd
  • MYSQL_DATABASE: app_name
  • MYSQL_USER: db_user
  • MYSQL_PASSWORD: 4pp_n4meP4sswrd0!
• The webapp will be using php:7.0-apache for the image.

Create two logs:

• Data volume app_data that maps to /var/www/html.
• Volume for logs called app_logs that maps to /var/logs/apache2.
• Link the db containers, webapp should always restart.
• Finally, webapp should link to db.

Once your docker-compose.yml is complete, bring the containers up and make sure they are detached.