I did an experiment a while ago with streaming chrome to twitch from a gpu-enabled ec2 node and it worked quite well. Was able to stream a webgl experience at 60hz.
We have a webgl app (hubs.mozilla.com) we wanted to determine the viability of doing cloud streaming of remotely.
here's some personal notes from this. i didn't work on containerization, just raw VM setup. had to get x11 up and running and then set ffmpeg up for hardware streaming.