Bug report

• I confirm this is a bug with Supabase, not with my own application.
• I confirm I have searched the Docs, GitHub Discussions, and Discord.

Describe the bug

Running the docker compose file for realtime in Linux gives the following error from realtime-server
(RuntimeError) Failed to detect IP version for DB_HOST: nxdomain and causes server to crash

To Reproduce

Run the docker compose file in a Linux environment. I ran it on Debian 12

Expected behavior

Realtime server should start with no issues

System information

• OS: Debian 12

Additional context

Running on Docker version 28.0.0 (Not Docker Desktop)
The issue seems to be with the server not being able to resolve DB_HOST which is set to host.docker.internal
It can be fixed by adding the hosts entry for host.docker.internal to host-gateway