dotcloud/docker — pull request #3558 by tianon (2014-01-10 21:40:09+00:00)
Title: Add support for `RUN [""]` in Dockerfiles

Thanks to @cpuguy83's new `buildCmdFromJson`, this is very trivial to implement for better consistency from instruction to instruction.

Just to head off @svendowideit, I know it needs documentation and tests. I'll get back to those hopefully soon. ;)