I'm working on a massive-scale game server deployment engine that utilizes docker for a new startup, and the fact that this is open source is tremendously beneficial to the scalable gameserver community. Currently we're deeply integrated in the Google cloud platform and are currently expecting a release within the next few weeks or so, which is one of the reasons this post came as such a surprise to me! We're planning on releasing most of our codebase under the Apache and MIT licenses, but doing so has been complex and slow. Hats off to them!