Dockerfile for mscs/Minecraft

[DanielBaulig]

Please checkout my Dockerfile for easily creating a Docker image of mscs. https://github.com/DanielBaulig/docker-minecraft

[zanix]

Neat. If I ever get the chance to try docker I'll try this.

[sandain]

@DanielBaulig's example is specific to his environment, however if this could be made more generic, it might be worth adding this enhancement to MSCS.

I don't have any experience with Docker, so I'll leave this issue open in hopes that someone with experience can submit a generic patch.

[anthr76]

Will be forking this week to see what improvements can be made.