Add multi-arch manifest for contrib_manylinux_2_34 images

[timosachsenberg]

Summary

• After building and pushing per-arch images (latest-amd64, latest-arm64), adds a create-multiarch-manifest job that combines them into a single multi-arch manifest under the base tag (e.g. latest)
• Docker then automatically pulls the correct architecture, enabling devcontainer arm64 support

Context

Required by OpenMS/OpenMS#8862 / OpenMS/OpenMS#8740 — the devcontainer references ghcr.io/openms/contrib_manylinux_2_34:latest and relies on it being a multi-arch manifest.

Test plan

• Trigger workflow manually via workflow_dispatch and verify the latest tag becomes a multi-arch manifest (docker manifest inspect ghcr.io/openms/contrib_manylinux_2_34:latest should show a manifest list)
• Verify devcontainer works on both amd64 and arm64

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Enhanced deployment pipeline to automatically generate and publish multi-architecture Docker images, improving compatibility across different processor architectures and enabling deployment to diverse environments.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 1ea0447d-fbe9-462c-8a64-3f8fca9784a9

📥 Commits

Reviewing files that changed from the base of the PR and between 43611bb and 500317c.

📒 Files selected for processing (1)

• .github/workflows/deploy-manylinux-docker.yml

---

📝 Walkthrough

Walkthrough

The GitHub Actions workflow for deploying manylinux Docker images has been enhanced with multi-architecture manifest support. A new create-multiarch-manifest job is added that depends on the existing Deploy job, and the Deploy job now exports a tag_name output for downstream consumption.

Changes

Cohort / File(s)	Summary
Workflow Multi-Arch Enhancement .github/workflows/deploy-manylinux-docker.yml	Added create-multiarch-manifest job to publish combined multi-architecture Docker images via docker buildx imagetools create. Deploy job now exports tag_name output for use by dependent jobs. Includes Buildx setup and ghcr.io registry authentication steps.

Possibly related PRs

• Fix git bullshit #155: Modifies the same workflow file and refactors the Deploy job structure, including architecture matrix adjustments and Dockerfile/tag logic changes.

Poem

🐰 A rabbit hops through layers of our code,
Multi-arch manifests down the deployment road,
One image for all, across every machine,
The most elegant Docker workflow you've seen!

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

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 and usage tips.}