ICYMI:
https://www.linuxserver.io/blog/webtop-4-0-wayland-is-here-engage-the-reality-engine
this really reminds me of qubes browser
https://www.qubes-os.org/news/2018/01/22/qubes-air/ "Instead, she can
access Qubes-as-a-Service with just a Web browser or a mobile app."

Example nixos config running it 2yrs ago
https://github.com/Ethorbit/nixos-configs/tree/5992e8b254593dd8587545f1a076e838bc5c9939/nixos/components/desktop-streaming/profiles/selkies-gstreamer

Source available at
https://github.com/selkies-project/selkies
https://github.com/selkies-project/docker-selkies-egl-desktop

James Smith