niumalll/go-backend/docker-compose.yml

version: '3.8'

services:
  app:
    build: .
    ports:
      - "8080:8080"
    environment:
      - DB_HOST=db
      - DB_PORT=3306
      - DB_USER=root
      - DB_PASSWORD=root
      - DB_NAME=niumall
    depends_on:
      - db

  db:
    image: mysql:8.0
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: niumall
    ports:
      - "3306:3306"
    volumes:
      - db_data:/var/lib/mysql

volumes:
  db_data: