Chainguard Container for cloudflared

Cloudflare Tunnel client (formerly Argo Tunnel)

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/cloudflared:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

The Chainguard cloudflared image is built with the standard Go toolchain, rather than Cloudflare’s patched fork. It is otherwise functionally equivalent to the upstream cloudflared container image.

This image enables integration into security-focused environments and reproducible builds while maintaining full compatibility with expected cloudflared behavior.

Quick Start

You can quickly get started with the cloudflared image using Docker:

docker run -it cgr.dev/ORGANIZATION/cloudflared:latest tunnel --no-autoupdate --hello-world

This command runs the built-in hello-world tunnel check.

To start cloudflared as a DNS proxy on port 1053, run:

docker run -it -p 1053:5053/tcp -p 1053:5053/udp cgr.dev/ORGANIZATION/cloudflared:latest proxy-dns

Notes

• The upstream Helm chart documentation has not been updated in several months; using this chart is not recommended.
• For Kubernetes deployment instructions, refer to k8s-TESTING.md

What are Chainguard Containers?

Chainguard Containers are minimal container images that are secure by default.

In many cases, the Chainguard Containers tagged as :latest contain only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager. Chainguard Containers are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a -dev variant.

Although the -dev container image variants have similar security features as their more minimal versions, they feature additional software that is typically not necessary in production environments. We recommend using multi-stage builds to leverage the -dev variants, copying application artifacts into a final minimal container that offers a reduced attack surface that won’t allow package installations or logins.

Learn More

To better understand how to work with Chainguard Containers, please visit Chainguard Academy and Chainguard Courses.

In addition to Containers, Chainguard offers VMs and Libraries. Contact Chainguard to access additional products.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.