test cli:
docker run -d --net=fabio-consul-compose_app_net -P --name=redis redis
# run a container as redis.
docker container inspect redis
# see service IP Address
# see Port
version 2.
docker run -d --net=fabio-consul-compose_app_net -e "SERVICE_NAME=db" -e "SERVICE_TAGS=master,backups" -e "SERVICE_REGION=us2" -P --name=redis redis
doc: http://gliderlabs.github.io/registrator/latest/user/quickstart/