Chainguard Container for busybox

Container image with only busybox and libc (available in both musl and glibc variants). Suitable for running any binaries that only have a dependency on glibc/musl.

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/busybox:latest

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

Upcoming Changes

On July 15, 2024 the busybox:latest image will move from a Alpine base to a Wolfi base, in-line with all other images in our registry. We do not expect this to cause breakages, but encourage all users to test and verify the new version.

You can test today by migrating to the cgr.dev/chainguard/busybox:latest-glibc image. From July 15, the :latest and :latest-glibc will point to the same image.

Full details are in this blog post.

Usage

Chainguard offers two different variations of the busybox Image. Both contain the BusyBox software but are built against different variants of libc:

• latest, meant for variants based on musl
• latest-glibc, meant for variants based on glibc

You can ensure that either of these Images are working correctly by testing that they can run commands and return output. The following commands will both return hello world! in your terminal:

musl:

docker run -it cgr.dev/chainguard/busybox:latest echo hello world!

glibc:

docker run -it cgr.dev/chainguard/busybox:latest-glibc echo hello world!

Also, note that you can open an interactive shell on either version of the Image with command like the following:

docker run -it cgr.dev/chainguard/busybox:latest sh

What are Chainguard Containers?

Chainguard's free tier of Starter container images are built with Wolfi, our minimal Linux undistro.

All other Chainguard Containers are built with Chainguard OS, Chainguard's minimal Linux operating system 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 development, or -dev, variant.

In all other cases, including Chainguard Containers tagged as :latest or with a specific version number, the container images include only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager.

Although the -dev container image variants have similar security features as their more minimal versions, they include additional software that is typically not necessary in production environments. We recommend using multi-stage builds to copy artifacts from the -dev variant into a more minimal production image.

Need additional packages?

To improve security, Chainguard Containers include only essential dependencies. Need more packages? Chainguard customers can use Custom Assembly to add packages, either through the Console, chainctl, or API.

To use Custom Assembly in the Chainguard Console: navigate to the image you'd like to customize in your Organization's list of images, and click on the Customize image button at the top of the page.

Learn More

Refer to our Chainguard Containers documentation on Chainguard Academy. Chainguard also offers VMs and Libraries — contact us for access.

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.