Accessing host.docker.internal from a container

Is this a docs issue?

• My issue is about the documentation content or website

Type of issue

I can't find what I'm looking for

Description

I have a service running on my host (python -m http.server 8111), I can't reach it from a container using host.docker.internal (curl http://host.docker.internal:8111 -> curl: (7) Failed to connect to host.docker.internal port 8111 after 0 ms: Couldn't connect to server).

To achieve this, I had to create two configuration files :

~/.config/systemd/user/docker.service.d/override.conf
[Service]
Environment="DOCKERD_ROOTLESS_ROOTLESSKIT_DISABLE_HOST_LOOPBACK=false"

~/.config/docker/daemon.json
{ "host-gateway-ip": "10.0.2.2" }

Location

https://docs.docker.com/engine/security/rootless/

Suggestion

It would be great if the problem and the solution appeared directly on the rootless page.

Start with the rootless Docker page at https://docs.docker.com/engine/security/rootless/ and review the reported host.docker.internal behavior and configuration snippets. Document the problem and the stated solution there; done means users can find guidance for reaching a host service from a rootless container.