/Docker 1.13

docker-compose port

Usage: port [options] SERVICE PRIVATE_PORT

--protocol=proto  tcp or udp [default: tcp]
--index=index     index of the container if there are multiple
                  instances of a service [default: 1]

Prints the public port for a port binding.

© 2013–2016 Docker, Inc.
Licensed under the Apache License, Version 2.0.
Docker and the Docker logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries.
Docker, Inc. and other parties may also have trademark rights in other terms used herein.