updates to fedora-docker.conf
- Update disk_size to 5 from 3 (from 30e6896)
- Add in Container minimal image build
- Fix references to f25 -> f26
- Fix references to f27 -> f26
Signed-off-by: Dusty Mabe <dusty@dustymabe.com>
(cherry picked from commit f6e7f6901bafbfd878bf54547989ba9543fe55ec)