Should be TRACKED_TAG_REGEX

Should be TRACKED_TAG_REGEX

The action and tag checks could all be moved into the selector, which is more efficient than message checks. Something like:

selector: "repo='${params.TRACKED_CONTAINER_REPO}' AND action IN ('added', 'updated') AND tag LIKE '${params.TRACKED_TAG_REGEX}'"

Does this really need to be a regex? It might be simpler to just make this a string that's matched against.

The action and tag checks could all be moved into the selector, which is more efficient than message checks. Something like:
selector: "repo='${params.TRACKED_CONTAINER_REPO}' AND action IN ('added', 'updated') AND tag LIKE '${params.TRACKED_TAG_REGEX}'"

Sounds good. Regex is used because in the existing job checks for updates of 2 tags. Since we are going to split into 2 jobs, each job should focus only on one tag.

Does this really need to be a regex? It might be simpler to just make this a string that's matched against.
Regex is not needed because each new job focuses only on one tag.

+1 This looks great!

Commit 5f84e1e0 fixes this pull-request