Dirk Hohndel f9910caa35 GitHub Actions: fix typo extracting the branch name
Also deal more gracefully with other potential bugs so that
we don't add an spurious '-' at the end if the branch is empty
for some reason (as that makes the image name invalid).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2019-12-05 15:51:29 -08:00
..