Netflix Ice (https://github.com/Netflix/ice) looks amazing. Going to setup tomorrow using the docker image (https://github.com/jonbrouse/docker-ice) and Amazon EC2 Container Service.

I worked somewhere recently where somebody had set up a daily buildbot to make Amazon images for each of several projects; After two years of this, they were shelling out $5k/mo in AWS hosting fees for data alone.

Thanks ranman.