traefik local docker experiment

10:43:31 ~/dev/play/traefik % cat t/docker-compose.yml ; cat a/docker-compose.yml ; cat b/docker-compose.yml
version: '3'

services:
  reverse-proxy:
    image: traefik # The official Traefik docker image
    command: --api --docker --keeptrailingslash # Enables the web UI and tells Traefik to listen to docker
    ports:
      - "80:80"     # The HTTP port
      - "8080:8080" # The Web UI (enabled by --api)
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock # So that Traefik can listen to the Docker events
    networks:
      - b_default
      - a_default

networks:
  a_default:
    external: true
  b_default:
    external: true
version: '3'

services:
  whoami:
    image: containous/whoami # A container that exposes an API to show its IP address
    labels:
      - "traefik.frontend.rule=Host:whoami.docker.localhost"
version: '3'

services:
  hullo:
    image: busybox
    command: 'sh -c "while true; do echo -e \"HTTP/1.1 200 OK\n\n hullo\" | nc -l -p 8090; sleep 0.1; done"'
    labels:
      - "traefik.frontend.rule=Host:hullo.docker.localhost"
      - "traefik.port=8090"