Here's the dockerfile

Do you have the Dockerfile with a .txt extension in your repo too?

No, I copied the text from Dockerfile just for example.

Okay, do you have a start command set elsewhere, like in the service settings, a Procfile, a railway.json file?

No, I deleted both Procfile and railway.json to use only Dockerfile

Deploy logs please -

https://bookmarklets.up.railway.app/log-downloader/

Can I post it as plain text?

Is that the entire deploy logs?

Yes.

Looks like your migrations never finish.

Is it possible that migration never finished because of I ran mqtt in apps.py?

Sounds plausible, is that a blocking call?

I think in loop_start() might be a blocking call.

Sounds like you have a bit of debugging to do!