gitlab-ci: Move to the official Skopeo image

The buildah/buildah image has seen its last update 4 years ago.

Switch to the official Skopeo image instead.

added 1 commit

• 76f41804 - gitlab-ci: Move to the official Skopeo image

Compare with previous version

approved this merge request

added 5 commits

• 76f41804...e0a669e4 - 4 commits from branch main
• 73a4e316 - gitlab-ci: Move to the official Skopeo image

Compare with previous version

enabled an automatic merge when the pipeline for 73a4e316 succeeds

aborted the automatic merge because target branch was updated

added 10 commits

• 73a4e316...f572b8af - 9 commits from branch main
• bd1682d8 - gitlab-ci: Move to the official Skopeo image

Compare with previous version

added 11 commits

• bd1682d8...d8b2d89c - 10 commits from branch main
• 98a46fcf - gitlab-ci: Move to the official Skopeo image

Compare with previous version

enabled an automatic merge when all merge checks for 98a46fcf pass

merged