ARC runner image

A small, public container image for ephemeral GitHub Actions runners managed by Actions Runner Controller (ARC).

The image intentionally stays close to GitHub's official ARC runner image. It adds only libatomic1, which is required by the standalone pnpm 11 executable, and uses the official ICSCoE Ubuntu mirror for Ubuntu archive and security packages.

Image

ghcr.io/kurotch-homelab/runner-image:2.336.0-1

Production deployments should pin the digest printed by the build workflow.

containers:
  - name: runner
    image: ghcr.io/kurotch-homelab/runner-image@sha256:...

Contents

• Base: ghcr.io/actions/actions-runner:2.336.0
• Architecture: linux/amd64
• Added package: libatomic1
• APT mirror: https://ftp.udx.icscoe.jp/Linux/ubuntu
• Default user: upstream runner user (1001:1001)

Language runtimes and build tools are not bundled. Workflows should continue to use setup actions such as actions/setup-node, actions/setup-go, and the appropriate Rust toolchain action.

Publishing

Create and push a release tag to build the image and publish it to GHCR:

git tag v2.336.0-1
git push origin v2.336.0-1

The workflow publishes both the version tag and a commit-derived tag, then checks the runner user, runner entrypoint, APT mirror, and libatomic.so.1.

Security

No credentials, internal network addresses, cluster names, or deployment configuration are included. The image is public and should be treated as fully inspectable. Runtime credentials must be injected by the deployment platform.