Create docker-compose.yml to one click start up.

[Anduin2017]

This is a docker-compose file that defines two services, db and web.

The db service is based on the mariadb image and sets environment variables for the root password, database name, user name, and password. It also maps the container's port 3306 to the host's port 3306.

The web service builds an image from the current directory (.) and sets environment variables for the connection string to the database and the database type. It maps the container's port 80 to the host's port 8080 and depends on the db service. It also defines a healthcheck that tests the availability of the web server every 30 seconds.

This docker-compose file can be used to deploy a web application that uses a MySQL database.