It took me less than 30 minutes to add a new test asteroid to my existing #uberspace account and to set up a working #navidrome instance with this #uberlab guide: https://lab.uberspace.de/guide_navidrome/
Thanks @ubernauten!
Now I will test #Amperfy for iOS to stream my own music files. No more inconvenient iTunes syncing to Apple Music app?!