Support GUI for launch containers requiring it.

[MickMake]

Only a brief google came up with things that need to be looked at:

• https://github.com/BurntSushi/xgb
• https://p.janouch.name/article-xgb.html
• https://git.janouch.name/p/haven/src/branch/master/prototypes/xgb-draw.go
• https://github.com/fananchong/go-xserver (https://xscode.com/fananchong/go-xserver)
• https://github.com/fananchong/go-xserver-plugins
• https://medium.com/mindorks/x-server-client-what-the-hell-305bd0dc857f

A hunch, the best way would be to spin up a container with an X11 server that is accessible via VNC. pros:

• No re-inventing the wheel - security, maintaining. (launch should enable, not maintain existing tech).
• Simpler access - VNC

Application flow: Container app [X11 client] -> [X11 server] Xserver container

User flow: launch run something [VNC client] -> [VNC server/X11 client proxy] Server container -> [X11 server] Xserver container

Further googles...

• https://github.com/mviereck/x11docker
• https://hub.docker.com/r/suchja/x11server
• https://github.com/mitchellh/go-vnc
• https://github.com/kward/go-vnc
• https://github.com/bradfitz/rfbgo
• https://github.com/graciegutman/vnc_server