Just wanted to swing by and say I was able to get this working for my Prusa.
Like some others above I wasn't trying to use a webcam so in order to get it to run Ineeded to `remove` all of the docker entries that were related to `webcam` and `streaming` and after that it started up fine
I then did the `add additional serial` bit from one of the first few posts and it's currently running a test print as I type!
Thanks for making/maintaining this package!