如何从docker-compose设置prestashop数据库服务器？

version: '3'
services:
  db:
    image: mysql:5.7
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: your_root_password
      MYSQL_DATABASE: prestashop
      MYSQL_USER: prestashop_user
      MYSQL_PASSWORD: prestashop_password
    volumes:
      - db_data:/var/lib/mysql
    networks:
      - prestashop_network

volumes:
  db_data:

networks:
  prestashop_network:

version: '3'
services:
  db:
    # Database service configuration

  prestashop:
    image: prestashop/prestashop:1.7
    restart: always
    ports:
      - 8080:80
    environment:
      DB_SERVER: db
      DB_NAME: prestashop
      DB_USER: prestashop_user
      DB_PASSWD: prestashop_password
    depends_on:
      - db
    networks:
      - prestashop_network

volumes:
  db_data:

networks:
  prestashop_network:

docker-compose up -d