docker-compoes mysql 설치

version: '2.6.6'
services:
  backend:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - 8080:8080

    depends_on:
      - db
  db:
    image: mysql:latest
    restart: always
    environment:
      - MYSQL_DATABASE=admin
      - MYSQL_ROOT_PASSWORD=root

    volumes:
      # 컨테이너 안 DB 변경사항이 실제 로컬 .dbdata 경로에 저장장
     - .dbdata:/var/lib/mysql
    ports:
      - 3306:3306