[NerdyBird]

This is false. Not listing the host port will make docker choose a random one. It however is still opened up in the firewall by default.

Source: https://docs.docker.com/compose/compose-file/#ports

[byteknight]

https://news.ycombinator.com/reply?id=24426759&goto=item%3Fi...

[jradd]

That’s what he said