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A Kubernetes Admission Controller for verifying image trust.
Chainguard Containers are regularly-updated, secure-by-default container images.
For those with access, this container image is available on cgr.dev
:
Be sure to replace the ORGANIZATION
placeholder with the name used for your organization's private repository within the Chainguard Registry.
This image is based on the upstream IBM Portieris image, which serves as a Kubernetes Admission Controller for verifying image trust. While this image is designed to function similarly to the upstream version, there are a few key differences and enhancements tailored to Chainguard's security-first approach.
cgr.dev/chainguard/portieris
as opposed to the original icr.io/portieris used in the upstream version. When deploying with Helm, ensure the image.host
is overridden accordingly.This upstream image maintains an Portieris helm chart and a README document describing how to deploy the chart. At a minimum the user will have to override the OCI reference. This Helm Chart uses the term image.host
to refer to what would usually be referred to as the image.registry
.
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:
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.
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.
Refer to our Chainguard Containers documentation on Chainguard Academy. Chainguard also offers VMs and Libraries — contact us for access.
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.
Chainguard container images contain software packages that are direct or transitive dependencies. The following licenses were found in the "latest" tag of this image:
Apache-2.0
LGPL-2.1-or-later
MIT
MPL-2.0
For a complete list of licenses, please refer to this Image's SBOM.
Software license agreement