Looks nice, but one should know that on the F-Droid page, the devs state:
Mauth uses latest Android technology (Jetpack Compose, CameraX, Biometrics, Room DB and more) to provide the best user experience with the least amount of bugs possible. It is in an active development but is nowhere near ready for daily usage. Use it at your own risk.
I had to look it up. It's the community image (apache version) from https://hub.docker.com/_/nextcloud/ which I use together with a mariadb and redis image.
Mine runs very smoothly. I set it up on a Raspberry Pi 4 (4GB) with an external 1TB drive. I run it in docker with the official (?) image and can't remember having set any special config.
If you have any questions, I'm happy to answer them. :)
Looks nice, but one should know that on the F-Droid page, the devs state: