What is linux equivalent of "host.docker.internal"
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.
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-gatewaySee the answer here: https://stackoverflow.com/a/61424570/3757139
See also this answer below to add to a docker-compose file - https://stackoverflow.com/a/67158212/243392
If you are using Docker Compose + Linux, you have to add it manually (at least for now). Use extra_hosts on your docker-compose.yaml file:
version: '3.7'services: fpm: build: context: . extra_hosts: - "host.docker.internal:host-gateway"Docs - https://docs.docker.com/compose/compose-file/compose-file-v3/#extra_hosts
Do not forget to update Docker since this only works with Docker v20.10+.
Source : https://github.com/docker/for-linux/issues/264#issuecomment-784985736