that's another service that Nextcloud advertises quite loudly, so tell them you think it's "unprofessional" and "partially unsuitable." 😆
The good news is, it seems the non-containerized version now *does* have documentation for running it on bare metal, thanks to Struktur AG (Nextcloud's documentation is apparently enshittifying with a "freemium" business model, as seen at https://portal.nextcloud.com/article/Nextcloud-Talk/High-Performance-Backend/Installation-of-Nextcloud-Talk-High-Performance-Backend .