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Show the published ports of a Docker container

harmless rootDockerdebian, ubuntu
Adjust the values, the command updates live
root@server
docker port app

Lists the published ports in the format 80/tcp -> 0.0.0.0:8080. If it shows 0.0.0.0 or [::], the port is reachable on all interfaces, with 127.0.0.1 only locally, for example for a reverse proxy in front.

Note: Ports published by Docker often bypass ufw rules because Docker sets its own iptables rules. Therefore bind services behind a proxy to 127.0.0.1. Docker commands require root or the docker group.

Also searched as

  • docker show port mapping
  • which ports does docker container expose
  • docker port command

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