ci: build release images on tag push only

[phanan]

What

Remove the workflow_dispatch trigger (and its koel_version input) from the release workflow, so release images are built only on a pushed v* tag.

Why

The manual dispatch path built and pushed images against an arbitrary koel_version without going through the ./release script — meaning it never bumped ARG KOEL_VERSION_REF in the Dockerfile / the goss.yaml version, never tagged the repo vX.Y.Z, and never moved latest. The result was an image build with no corresponding repo release: source stuck on an old version, no tag, stale latest.

Making tag-push the only trigger forces every release through ./release vX.Y.Z, which performs the version bump + tag + latest move and then triggers the build via the tag push. One path, always complete.

Changes

• Drop workflow_dispatch and the koel_version input from on:.
• Simplify the "Resolve version" step to read $GITHUB_REF_NAME directly (the env-var indirection existed only to guard the dispatch input against template injection; with tag-push only, the ref is trusted).

Summary by CodeRabbit

• Chores
  • Release automation now runs only when a version tag is pushed.
  • Removed the option to start the release process manually with a version input.
  • Release version values are now taken directly from the tag name, simplifying how releases are identified.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0dffbb31-a390-4986-aab2-68e1a77f50cf

📥 Commits

Reviewing files that changed from the base of the PR and between 9cc04f4 and 8af5540.

📒 Files selected for processing (1)

• .github/workflows/release.yml

---

📝 Walkthrough

Walkthrough

The release workflow's trigger is simplified to only fire on tag pushes matching v*, removing the manual workflow_dispatch option and its koel_version input. The version resolution step now derives the version directly from GITHUB_REF_NAME instead of an intermediate KOEL_VERSION fallback.

Changes

Release Workflow Simplification

Layer / File(s)	Summary
Trigger and version resolution .github/workflows/release.yml	Removes the workflow_dispatch trigger and koel_version input, and simplifies the "Resolve version" step to set REF="$GITHUB_REF_NAME" directly.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Possibly related PRs

• koel/docker#222: Introduced the workflow_dispatch/KOEL_VERSION-based version resolution that this PR removes and reverts back to GITHUB_REF_NAME.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the workflow change to build release images only on tag pushes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ci/remove-release-workflow-dispatch

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}