I've just looked this up. So is Yunohost supposed to replace Proxmox or can I install it as a service in Proxmox? Will it run in Docker?
I'd have a go at installing it if my 10 year old wasn't saving democracy on my PC at the mo (playing Helldivers 2) there's no way I can prize him off that just to tinker with and ultimately uninstall, another service for a few hours. I got shit to do today.
Yunohost is doing the installation and finishing with having a XMPP and email server, and from there you can install apps on top of that. You can play with Yunohost inside a container if you wanted to but you will have to prepare the proxy in front of it. If you want to try Yunohost the easiest way, rent a VPS for it.