I created the following issue on here: https://github.com/docker-flink/docker-flink/issues/29 where it was suggested I should bring this up on the list.
1.4 has been released. Hurray! But there isn't yet a dockerfile / image for the release. Furthermore, it would be nice to have dockerfile / images for each RC release, so people can incrementally test features using docker before release. Is it possible to use CI to generate images and add Dockerfiles for each release?