I often need a quick, throw-away Linux desktop environment for testing xdotool on Wayland. Can't find a solution, so i made one!
Using qemu + cloud-init, I've got Ubuntu installing GNOME in about a minute! Here's a demo: www.youtube.com/watch?v=rizd...
youtube.com
60-seconds to launch! Ubuntu cloud-init + GNOME desktop
YouTube video by Jordan Sissel