This changes installer image/iso output to be tar via stdout
(optionally), so that we can copy back artifacts back from remote docker
daemon.
Fixes#2776
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
This PR adds embedded youtube videos in places where we have done
walkthroughs of this functionality.
Signed-off-by: Spencer Smith <robertspencersmith@gmail.com>