The bundle and docker-image build/dedup checks used different cache
keys: the bundle was cached by ref name (`penpot-<gh_ref>.zip`) while
the docker image marker was cached by commit sha
(`markers/images-sha-<sha>`). A tag built from a commit already
promoted under another ref (e.g. `develop`) would rebuild the bundle
unnecessarily, while `build-docker`'s `promote` job silently inherited
the skip from `build` and never created that ref's branch tags
(`backend:<gh_ref>`, `frontend:<gh_ref>`, ...), even though the
underlying sha-tagged images already existed.
- Key the bundle S3 object by commit sha (`penpot-sha-<sha>.zip`)
instead of by ref name, matching the docker marker's semantics.
- Drop the S3 metadata round-trip for `bundle_version` in
build-docker.yml; compute it locally with `git describe`, same as
build-bundle.yml (requires fetch-depth: 0 on that checkout).
- Split `promote` into two mutually-exclusive jobs, `promote` (needs
`build` to succeed) and `retag` (needs only `prepare`, runs when
`prepare.outputs.exists == 'true'`), each moving the `:<gh_ref>`
branch tags to the current sha. This replaces relying on `build`'s
skip/success state with two explicit conditions, so the tags always
get moved regardless of which path built the images.
Signed-off-by: David Barragán Merino <david.barragan@kaleidos.net>
The notify steps referenced mattermost/action-mattermost-notify@master, a
mutable branch that runs in CI with access to the MATTERMOST_WEBHOOK_URL
secret. Pinning to the immutable commit of the latest release (v2.1.0,
ae31bb6) keeps the exact reviewed code from executing, per GitHub third-party
action hardening guidance, while staying easy to bump.
