Turn on the tcp reuse flag, to be able to reuse TIME_WAIT sockets and
prefer using local images to builders env var.

also prefer using local images for builds
Merge pull request #149 from bparees/master

Turn on the tcp reuse flag, to be able to reuse TIME_WAIT sockets and prefer using local images to builders env var.
Restart when syncing can be turned off with --dont-restart flag