Use full flags and...

move to the background.  Having it in the foreground that you cannot easily exit out of is jarring.  I am more than happy to remove the background flags, but I feel it is a better user user experience this way.
changing interactive to false vs true...
Dropping un-needed flags.
Adding image tag to 14.04

Tagging this to Ubuntu LTS 14.04.
Clean-up and making ENTRYPOINT preferred form...

Adding clean-up RUN, and making ENTRYPOINT the preferred form.
quickstart/Dockerfile: cleanup

switch to google/debian:wheezy / libprotobuf7
remove apt-get upgrade (you should rely on the base image being updated)
add --no-install-recommends
remove cleanup at the end (it doesn't save space, as the file already are in previous layers)
#16 Moving quickstart to new folder
#16 Creating docker-only Dockerfile