Updated scripts and Dockerfile.

* Better Dockerfile docs.
* Moved NodeJS to supervisor so that the container keeps on running even
  if node fails to start and we can SSH there and check out what's
  wrong.
Merge branch 'master' of github.com:salsita/jenkins-deployment-example

Conflicts:
	deploy/targets/run/go
	deploy/targets/run/supervisord.d/mongodb.ini