Workspace Golden Image

Issue - Build golden container image to be used by defa... (gitlab#474984 - closed)

What does this MR do and why?

Build Workspaces golden image with ubuntu and golang installed, and so pre-configure

Checklist

• (If applicable) Add patches if required for upgrading Ruby version in https://gitlab.com/gitlab-org/gitlab-build-images/-/tree/master/patches/ruby.