Unable to create router for some containers

Hi guys, my issue as been auto-closed as a configuration problem, but it's not.
The actual config is working but traefik is unable to route and read from an ASP.NET Core 3 container


I read your github issue, and you are saying that when you use the containous/whoami container, you can access it fine with your Traefik configuration, but when you use a custom container, it doesn't work?

thanks for your answer, it currently works with custom containers, except for images based on aspnetcore 3.1, while aspnetcore 2.2 still works.
I tried with same config (same docker-compose), to switch from 2.2 to another 3.1 image and do it back again and again to reproduce the bug