Merge branch 'master' of github.com:Project-DogeOS/DogeOS

Conflicts:
	overlay/dogeos/bin/common.sh
	overlay/dogeos/bin/headnode-install
	overlay/dogeos/bin/pxe-install
Merge branch 'master' of github.com:Project-DogeOS/DogeOS
use build as the auto-build dir, modified the build.sh for that