version: "2"

services:

  web:
    image: nginxdemos/hello
    ports:
      # importante marcar puerto interno 80 sin asignar a uno externo
      # docker-machine le asignará puerto externo automáticamente
      - 80
  lb:
    image: dockercloud/haproxy
    ports:
      - 8085:80
    links:
      - web
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock