Hi, This is just to inform the community that, there are two items which are missing from the wiki build pages which is essential for making starlingX iso on Ubuntu 16.04 host system. Under section Installation Requirements and Dependencies on https://wiki.openstack.org/wiki/StarlingX/Developer_Guide url create a user $ useradd -m -d /home/builder builder $ sudo sh -c "echo 'builder ALL=(ALL:ALL) ALL' >> /etc/sudoers" under section Docker CE, after doker installation is done. Add the following $ groupadd -aG docker builder Best Regards, Rajesh Jha The information contained in this e-mail and any accompanying documents may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient of this message, please immediately alert the sender by reply e-mail and then delete this message. Any dissemination, distribution or other use of the contents of this message by anyone other than the intended recipient is strictly prohibited. R Systems has taken every reasonable precaution to minimize the risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment.