Tried an install and failed ... three times!

I tried to install the seafile community edition the docker way on a fresh installed virtual machines running Ubuntu 22.04 LTS and Debian 11 - and failed! Also tried the installation script on Ubuntu and ran into the (version related) error with cffi.
I got no errors with the docker way, but only a 502 Bad Gateway in the end and docker-compose logs -f gives me no good idea where to look.