Synchronize common files from prometheus/prometheus

[prombot]

Propagating changes from prometheus/prometheus default branch.

Source can be found here.

To check out this branch locally and push changes back:

git remote add prombot https://github.com/prombot/prometheus_alertmanager.git
git fetch prombot repo_sync
git checkout -b repo_sync prombot/repo_sync

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 521fa400-2283-4f5e-86f1-78e55bccb7d3

📥 Commits

Reviewing files that changed from the base of the PR and between ee6b5f4 and bee83eb.

📒 Files selected for processing (1)

• Makefile.common

Included review availability: Your plan includes up to 8 reviews per rolling hour; 7 remain after this review.

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📝 Walkthrough

Walkthrough

Docker builds now convert Prometheus architecture names to OCI platform strings. The computed platform is passed to both default and named Dockerfile builds. ARM architectures include their version.

Changes

Docker platform mapping

Layer / File(s)	Summary
Platform conversion and build wiring Makefile.common	DOCKER_ARCHS is documented as using Prometheus architecture names. ARM architectures convert to linux/arm/vN; other architectures convert to linux/<arch>. Docker builds receive the computed platform for default and named variants.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to bee83

This localized synchronization change introduces no actionable merge-blocking risk, so it is merge-ready after normal checks and review.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the synchronization source but omits the required checklist responses and release-notes entry.	Complete the template checklist and add a release-notes entry, using NONE if no user-facing changes apply.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the synchronization of common files from prometheus/prometheus.
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

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