I installed jitsi-meet .deb packages from https://download.jitsi.org on a Debian 9 (stable, stretch) container.
The installation was very smooth and I like, that the dependencies are used from the Debian base. Nice!
However, only text chat works, while audio and video fail. People see themselves, but not their peers.
The videobridge is running, prosody is running, nginx is running. Ports 80, 443, and 4443 are open to the world, while all other ports are blocked. Nginx still runs with a self-signed cert, btw.
Any idea how to debug this? Any typical errors to check for?
Many thanks in advance!