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.int

Answer 1

For linux systems, you can – starting from major version 20.04 of the docker engine – now also communicate with the host via host.docker.internal. This won't work automatically, but you need to provide the following run flag:

--add-host=host.docker.internal:host-gateway

See the answer here: https://stackoverflow.com/a/61424570/3757139