Where are the docker files? #142

It appears that the dockerfiles for Python were moved out of the fnproject/dockers repo and into this repo (PR #23 against that repo and PR #76 in this repo). However, there appears to no longer be an images directory or any dockerfiles on the master branch of this repo and there is also not a Python directory in the dockers repo.

Where are the docker files that the currently used docker images are based on? Developers ought to be able to inspect these and use them as the basis of their own images.