Block Out Image Attestation For Free - Buildx No Default Attestations

$ docker buildx build --sbom=true --provenance=true . Provenance attestations are enabled by default, with the mode=min option. You can disable provenance attestations using the --provenance=false flag, or by setting the BUILDX_NO_DEFAULT_ATTESTATIONS environment variable.

Binary Authorization aims to reduce the risk of deploying defective, vulnerable, or unauthorized software in this type of environment. Using this service, you can prevent images from being deployed unless it satisfies a policy you define.

Additionally, --provenance can be used with boolean values to broadly enable or disable provenance attestations. For example, --provenance=false can be used to disable all provenance attestations, while --provenance=true can be used to enable all provenance attestations.

You use attestations to authorize specific container images to be deployed on platforms, such as Google Kubernetes Engine (GKE) and Cloud Run. To use attestations, you must require attestations in the appropriate rule of your policy.

Simply put, an attestation letter (often called an Executive Summary Report) is a statement or declaration from an independent third party that lends credibility to the part of the organization undergoing review.

After a container image is built, an attestation can be created to affirm that a required activity was performed on the image such as a regression test, vulnerability scan, or other test. The attestation is created by signing the image's unique digest.

Attestation is the act of witnessing the signing of a formal document and then also signing it to verify that it was properly signed by those bound by its contents. Attestation is a legal acknowledgment of the authenticity of a document and a verification that proper processes were followed.