[mgurlitz]

With containers, Docker gave us universal compatibility for running software. A Dockerfile gives us universal compatibility for building and customizing our software. Docker needs some time for the community to grow and the documentation to mature, but once it does I think it will be difficult to imagine ever not having Docker. Docker is largely "batteries not included," and slowly getting more useful with improvements like this, bind mounts [1], and lots of users writing their own tutorials.

1: https://github.com/dotcloud/docker/pull/602