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 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.