drupal docker compose

docker-compose.yml

version: '2'
services:
  web:
      image: drupal:7.43-apache
      volumes:
          - .:/var/www/html
      links:
          - "db:mysql"
      ports:
          - "80:80"
  db:
      image: mysql
      volumes:
          - /var/lib/mysql
      environment:
          MYSQL_USER: drupal
          MYSQL_PASSWORD: drupal
          MYSQL_DATABASE: drupal
          MYSQL_ROOT_PASSWORD: root