We created an easy setup script for Debian 11 (Bullseye) which can install Nextcloud High performance backend, Signaling & Collabora Office (with MS fonts) in only 5 minutes. It also creates a Let’s Encrypt certificate via Certbot and handles multi domain support for different Nextcloud installations for Talk and Collabora Office.
The GitHub page: https://github.com/sunweaver/nextcloud-high-performance-backend-setup
The German Wiki for the Script (not complete yet): https://github.com/sunweaver/nextcloud-high-performance-backend-setup/wiki/02-Setup-Script
Wow, awesome , thanks @mircokam !