---

#
# build all non-image containers
# $ docker-compose build
# can be combined into one command to also start it afterwards
# $ docker-compose up --build
#

version: "3.8"

services:
  micropython-client:
    build:
      context: .
      dockerfile: Dockerfile.client_tcp
    container_name: micropython-client
    volumes:
      - ./:/home
      - ./umodbus:/root/.micropython/lib/umodbus
    expose:
      - "502"
    ports:
      # reach "micropython-client" at 172.24.0.2:502, see networks
      - "502:502"
    networks:
      my_bridge:
        # fix IPv4 address to be known and in the MicroPython scripts
        # https://docs.docker.com/compose/compose-file/#ipv4_address
        ipv4_address: 172.24.0.2

  micropython-host:
    build:
      context: .
      dockerfile: Dockerfile.host_tcp
    container_name: micropython-host
    volumes:
      - ./:/home
      - ./umodbus:/root/.micropython/lib/umodbus
    depends_on:
      - micropython-client
    networks:
      my_bridge:
        # fix IPv4 address to be known and in the MicroPython scripts
        # https://docs.docker.com/compose/compose-file/#ipv4_address
        ipv4_address: 172.24.0.3

networks:
  my_bridge:
    # use "external: true" if the network already exists
    # check available networks with "docker network ls"
    # external: true
    driver: bridge
    # https://docs.docker.com/compose/compose-file/#ipam
    ipam:
      config:
        - subnet: 172.24.0.0/16
          gateway: 172.24.0.1