docker-compose.yml

version: "3.4"
services:
  mydb_jenkins:
    image: postgres:12.1
    # if you define the build and image both, then image build from build tag, the image tag describe image name.
    container_name: postgres_db_jenkins
    restart: always
    ports:
      - 5432:5432
    environment:
      # do not put the password in the Dockerfile for the security issue
        POSTGRES_USER: 'kensin'
        POSTGRES_PASSWORD: 123
        POSTGRES_DB: 'DEV_DB' # database name

  jenkins:
    image: jenkins/jenkins:lts-centos
    container_name: jenkins
    user: root
    restart: always
    ports:
      - "50000:50000"
      - "8081:8080"
    volumes:
      - ./jenkins_home:/var/jenkins_home
      - /var/run/docker.sock:/var/run/docker.sock
      - /usr/local/bin/docker:/usr/bin/docker
      #$(which docker):/usr/bin/docker


  #Test: 
  #  1. if not prerequsitely download the maven container, not test internet issue
  #maveanTest:
  #   image: maven:3-alpine
  #   container_name: mavean_container
  #   restart: always
  #   volumes: 
  #     - /Users/zhaoliang/.m2:/root/.m2