I started working on a docker container for piston a few days ago, but got side tracked and never finished. I'm so glad to hear that it's happening!
I've got a few apps I'm considering (besides the few I've done), some of which might lend very well to docker containers. I'd love to see what you guys come up with and how you accomplish all of this!
I'm putting the finishing touches on piston now. I'd like to do some user surveys for this project-- does anyone have a suggestions as for a platform to do these user surveys on?