dhi.io/gha-runner-scale-set-controller
Actions Runner Controller
Kubernetes controller that orchestrates ephemeral self-hosted GitHub Actions runners using autoscaling runner scale sets.
pushed 9 hours ago
linux/amd64, linux/arm64
56.98 MB
for linux/amd64
110
for linux/amd64
Active support
manager, ghalistener, github-webhook-server, actions-metrics-server
Build Level 3
Tamper-evident proof of how and from what sources this image was built. Build Level 3 is the highest the SLSA build track defines.
CycloneDX SBOM + SPDX SBOM
A software bill of materials in both CycloneDX and SPDX formats so it drops straight into your existing tooling. Audit exactly what you're shipping.
A Vulnerability Exploitability exchange document, Docker's assessment of which CVEs actually affect this image and which don't apply, so you can focus on real risk instead of chasing false positives.
Available
A link to everything used to build the image, package source code, Git repos, and build files, so you can audit or reproduce the build and stay compliant with open source licenses.
Every known vulnerability in this image, shown in full rather than hidden. The VEX data flags which ones actually apply, so you can tell real exposure from noise before you ship.
Exactly what changed in this build, down to the package bumps and fixes behind the version you're pulling.
Verifies no keys, tokens, or credentials were accidentally baked into the image.
The image layers were scanned for known malware signatures before publishing.
About Actions Runner Controller
Actions Runner Controller (ARC) is a Kubernetes operator that orchestrates and scales self-hosted runners for GitHub
Actions. It watches AutoscalingRunnerSet custom resources and automatically scales runner pods up and down based on
the number of queued workflow jobs in a repository, organization, or enterprise. Runners are ephemeral and
container-based, so new instances start and stop rapidly without leaving residual state.
ARC is installed via Helm charts and requires a GitHub App or personal access token to authenticate to the GitHub API.
The controller manages the full lifecycle of runner scale sets and spawns a per-scale-set listener process
(ghalistener) that polls GitHub for pending jobs. Optional components (github-webhook-server,
actions-metrics-server) enable webhook-driven scaling and Prometheus metrics respectively.
For more details, see https://github.com/actions/actions-runner-controller.
About Docker Hardened Images
Docker Hardened Images are built to meet the highest security and compliance standards. They provide a trusted foundation for containerized workloads by incorporating security best practices from the start.
Why use Docker Hardened Images?
These images are published with near-zero known CVEs, include signed provenance, and come with a complete Software Bill of Materials (SBOM) and VEX metadata. They're designed to secure your software supply chain while fitting seamlessly into existing Docker workflows.
Trademarks
GitHub® and GitHub Actions™ are trademarks of GitHub, Inc., a subsidiary of Microsoft Corporation. All rights in those marks are reserved to GitHub, Inc. Any use by Docker is for referential purposes only and does not indicate sponsorship, endorsement, or affiliation.
Kubernetes® is a registered trademark of The Linux Foundation. All rights in the mark are reserved to The Linux Foundation. Any use by Docker is for referential purposes only and does not indicate sponsorship, endorsement, or affiliation.