Separate Docker Image Tag for latest

[ameer1234567890]

Currently the master branch builds the :latest image tag for docker builds. This means that any commits done to the master branch builds a new :latest image. It is common standard among developers to have the :latest image corresponding to the latest semvar (or version numbered) release.

I am suggesting to have a seperate :latest tag, which is build when a new semvar is releaed. The :master tag can be built when there is a new commit to the master branch in git, which in turn acts as a bleeding edge release.