To the guy that recommended linuxserver chromium
https://hub.docker.com/r/linuxserver/chromium
Thank you this work like a magic including sound, and even on wifi connection it's smooth 60fps.
I have some questions if anyone knows though.
How secure/private this?
I mean on local network the connection uses self-signed SSL so there's no plain text, and I can secure the connection with authentication so no one can use the VNC, and even then I'm running the container without mounting any volumes and in ephemeral mode.