Add Ubuntu 20.04 build image
Adds a build image for Ubuntu 20.04 Focal.
This is needed downstream in omnibus-gitlab!4344 (merged).
Relates to issue omnibus-gitlab#5176 (closed).
Edited by Dustin Collins
Adds a build image for Ubuntu 20.04 Focal.
This is needed downstream in omnibus-gitlab!4344 (merged).
Relates to issue omnibus-gitlab#5176 (closed).