What is linux equivalent of "host.docker.internal"

Question

On Mac and Windows it is possible to use docker.for.mac.host.internal (replaces docker.for.mac.localhost) and docker.for.win.host.internal (replaces docker.for.win.localhost) host.docker.internal (Docker 18.03+) inside container.

Is there one for Linux that will work out of the box without passing env variables or extracting it using various CLI commands?

Answer 1

Depends what you're trying to do. If you're running with --net=host, localhost should work fine. If you're using default networking, use the static IP 172.17.0.1. I suspect neither will behave quite the same as those domains.