docker-compose.yml

version: "3"
services: 
  springboot-app: # Name for this application as for one app
    container_name: rest-demo-container # Container names
    image: rest-demo-app # Used to write this image
    restart: always
    build: . # This can be used to build docker image. This docker file will used build docker image
    ports:
      - 8080:8080 
    environment:
      MYSQL_HOST: mysqldb # When same name, docker will create under same network
      MYSQL_USER: root
      MYSQL_PASSWORD: root
      MYSQL_PORT: 3306
    depends_on: # Ensure db running first before springboot app
      - mysqldb

  mysqldb: # When same name, docker will create under same network
    container_name: mysqldb # When same name, docker will create under same network
    image: mysql
    ports: 
     - 3307:3306   
    environment:
      MYSQL_DATABASE: user_rest_demo
      MYSQL_ROOT_PASSWORD: root