Filtering disabled one container and I do not know why

Traefik Traefik v3 (latest)
1

I have several services running on docker, some are traefik.enable=true and run fine.

I experimented on some proxification to Tailscale (I know that Traefik has this in the pipeline as well) and Gitea was my guinea pig. After some tests (with labels) I wanted to get gitea working as before.

And bummer, it does not get regiosted with Traefik anymore.

The docker compose file is fairly standard:

services:
  gitea:
    image: gitea/gitea:latest
    labels:
      - traefik.enable=true
      - traefik.http.routers.gitea.rule=Host(`gitea.XXX.YYY`)
      - traefik.http.services.gitea.loadbalancer.server.port=3000
    restart: unless-stopped
(...)

and other services use a similar docker compose file and start OK (this is to highlight that I use Docker and not Docker Swarm).
The service (Gitea) starts OK too, I see the labels when inspecting the running container.

In the Traefik logs I see

traefik-1   | 2025-07-04T16:23:38+02:00 DBG github.com/traefik/traefik/v3/pkg/provider/docker/config.go:185 > Filtering disabled container container=gitea-devops-a7000c49cf9cbf76845fb120b5fd0209918ba19912b8fe71bc2947558aded7be providerName=docker

It looks like Traefik deliberately excluded Gitea (like it does for services that are not proxified).

Since this used to work without any problems I spend a fairly extensive time looking at the configuration for typos (though I do not know where that may come from as that part was never changed) and here I am: stuck.

Any ideas?

2

Do you use a docker socket proxy?