Avahi daemon not working on Debian container (Proxmox)

I'm trying to make all my hosted services reachable via a userfriendly name instead of their IP. I googled and found that mDNS makes this possible and that I need to install the avahi-daemon on my containers in order to make them reachable via hostname.local. After executing apt install avahi-daemon it's working perfectly fine on my Ubuntu containers, but not on my Debian containers. I tried to check the config file, which is supposed to be in /etc/avahi. This folder doesn't even exist on my Debian containers. Only on Ubuntu.

The service is up and running btw:

What am I doing wrong?