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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.

In docker build all builds finish by creating a container image and exporting it to docker images . buildx makes this step configurable allowing results to be exported directly to the client, oci image tarballs, registry etc. Buildx with docker driver currently only supports local, tarball exporter and image exporter.

$ 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.

The provenance attestations include facts about the build process, including details such as: Build timestamps. Build parameters and environment. Version control metadata. Source code details.

Open your Docker desktop application. Find settings. Find Docker Engine. You can find below json: { "builder": { "gc": { "defaultKeepStorage": "20GB", "enabled": true } }, "experimental": false, "features": { "buildkit": false } } Default value of "buildkit":true -> change to false. Restart the engine.

For example, --provenance=false can be used to disable all provenance attestations, while --provenance=true can be used to enable all provenance attestations. By default, a minimal provenance attestation will be created for.

Attestation Manifest Attestation manifests are attached to the root image index object, under a separate OCI image manifestopen_in_new. Each attestation manifest can contain multiple attestation blobs, with all the of the attestations in a manifest applying to a single platform manifest.

Setting the DOCKER_BUILDKIT environment variable to 0 will disable BuildKit. However, changing the Docker engine configuration doesn't have the same disabling effect on BuildKit.