Hi, nice docker image.
I am planning to move away from a syncthing+nextcloud setup towards a seafile setup, and I'm probably going to use this image. However, I am worrying for the performance of sqlite, as I will host many files (~2TB of data). You mentioned that MySQL is a possible setup. I just added this issue to tell you that I will attempt to set this up with MariaDB, and I will most likely come back here with results, and maybe create a pull request so others can do it without a hassle.
If you have any guidance how this can be done, you are free to share it here.
Anyways, thanks for your image :)