ci: add helm chart ext-blockfrost-operator publish script

[verbotenj]

Summary by cubic

Add a GitHub Actions workflow to package and publish the ext-blockfrost-operator Helm chart to ghcr.io on pushes to main. This automates chart releases under ghcr.io/<owner>/<repo>/charts.

• New Features
  • Packages charts/ext-blockfrost-operator and pushes to ghcr.io/<owner>/<repo>/charts via Helm OCI.
  • Runs only when chart or workflow files change; uses actions/checkout and azure/setup-helm with GITHUB_TOKEN auth.

^{Written for commit fc8f1ef. Summary will update on new commits.}

Summary by CodeRabbit

• Chores
  • Enhanced automated deployment pipeline for chart distribution to improve release processes.

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request introduces a new GitHub Actions workflow file that automates publishing of the Blockfrost Operator Helm chart. The workflow triggers on pushes to the main branch when files in the charts/ext-blockfrost-operator/ directory or the workflow file itself change. The workflow checks out the repository, installs Helm, packages the chart to a dist/ directory, authenticates with the Helm OCI registry at ghcr.io, and publishes the packaged chart artifacts to the repository's OCI charts repository.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding a CI workflow for publishing the ext-blockfrost-operator Helm chart, which aligns with the workflow file added.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ci-publish-blockfrost-helm-chart

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[coderabbitai]

🧹 Nitpick comments (1)

.github/workflows/publish-ext-blockfrost-operator-helm-chart.yml (1)

20-21: Pin Helm CLI version for reproducible CI behavior.

On lines 20–21, azure/setup-helm is SHA-pinned but Helm itself defaults to latest. Add an explicit version parameter to ensure consistent behavior across CI runs and align with other workflows in this repository (e.g., publish-bind9-helm-chart.yml).

Suggested patch

      - name: Install Helm
        uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5.0.0
+       with:
+         version: v3.18.3

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In @.github/workflows/publish-ext-blockfrost-operator-helm-chart.yml around
lines 20 - 21, The Helm setup step is SHA-pinned but doesn't fix the Helm CLI
version; update the "Install Helm" step that uses
azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 to include a with:
version: "<pin-a-specific-helm-version>" entry (e.g., version: "3.11.3") so the
workflow installs a reproducible Helm CLI version instead of defaulting to
latest.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In @.github/workflows/publish-ext-blockfrost-operator-helm-chart.yml:
- Around line 20-21: The Helm setup step is SHA-pinned but doesn't fix the Helm
CLI version; update the "Install Helm" step that uses
azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 to include a with:
version: "<pin-a-specific-helm-version>" entry (e.g., version: "3.11.3") so the
workflow installs a reproducible Helm CLI version instead of defaulting to
latest.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: ef7f2287-4468-42cd-803d-4f2d7569c555

📥 Commits

Reviewing files that changed from the base of the PR and between c1c0cb9 and fc8f1ef.

📒 Files selected for processing (1)

• .github/workflows/publish-ext-blockfrost-operator-helm-chart.yml

[cubic-dev-ai]

No issues found across 1 file