Generate user friendly documentation given a dockerfile

[jcfr]

The idea would be to generate user friendly set of instruction given a Dockerfile. The intent is to automate the generation of distribution specific documentation reported here: http://wiki.slicer.org/slicerWiki/index.php/Documentation/Nightly/Developers/Build_Instructions#Linux

Package to consider:

• https://github.com/joyent/node-docker-file-parser
• https://www.npmjs.com/package/dockerfile-parse