services:
  postgresql:
    image: postgres
    ports:
      - 127.0.0.1:5432:5432
    environment:
      POSTGRES_DB: testdb
      POSTGRES_PASSWORD: secret

  mysql:
    image: mysql
    ports:
      - 127.0.0.1:3306:3306
    environment:
      MYSQL_DATABASE: testdb
      MYSQL_ROOT_PASSWORD: secret

  mongodb:
    image: mongo
    ports:
      - 127.0.0.1:27017:27017

  emqx:
    image: emqx/emqx:5.0.7
    ports:
      - 127.0.0.1:1883:1883

  redis:
    image: redis:7
    ports:
      - 127.0.0.1:6379:6379