Exemplo de compose php, mysql, phpmyadmin

docker-compose.yml

# http://www.phprs.com.br/2016/05/criando-um-ambiente-de-desenvolvimento-php-com-docker-compose/
# http://yutaf.github.io/run-phpmyadmin-in-docker-compose/

# uso:
# php http://localhost/
# phpMyAdmin http://localhost:8080/

php:
  build: ../
  ports:
   - "80:80"
   - "443:443"
  volumes:
   - ../www:/var/www/html
  links:
   - db

db:
  image: mysql:5.7
  volumes:
   - /var/lib/mysql
  environment:
   - MYSQL_ROOT_PASSWORD=phprs
   - MYSQL_DATABASE=phprs

phpmyadmin:
  image: phpmyadmin/phpmyadmin
  links:
    - db
  environment:
    PMA_HOST: db
    PMA_PORT: 3306
  ports:
    - '8080:80'