add support for signing image and SBOM#24
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Signed-off-by: Raman Tehlan <ramantehlan@gmail.com>
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Wire jobs.build.outputs.digest through on.workflow_call.outputs so caller workflows can read needs.<job>.outputs.digest as documented. Co-authored-by: Raman Tehlan <ramantehlan@gmail.com>
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anchore/sbom-action/download-syft exposes the binary via the cmd output rather than relying on PATH. Give the install step an id and invoke that path so enable_sbom does not fail with command not found. Co-authored-by: Raman Tehlan <ramantehlan@gmail.com>
DeeAjayi
approved these changes
Jul 16, 2026
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Note
Medium Risk
Changes affect shared CI used by many repos; misconfigured OIDC permissions or registry cosign support could break opt-in signing/SBOM steps without affecting default builds.
Overview
Extends the reusable
build.ymlimage pipeline with optional supply-chain attestations after push: callers can turn on keyless cosign signing (enable_sign) and Syft-generated SPDX SBOM attestations (enable_sbom), both targeting the pushed manifest by digest for JFrog and/or Public ECR when those registries are enabled.The workflow now surfaces the image digest as a reusable output (from the build step) so downstream jobs can pin or verify
repo@sha256:…. New post-push steps install cosign/Syft when needed, fail fast on an empty digest, and document that callers must grantid-token: writefor OIDC keyless signing.README is updated with the new inputs, the
digestoutput, usage with permissions, and examplecosign verify/ attestation commands.Reviewed by Cursor Bugbot for commit 724aa16. Bugbot is set up for automated code reviews on this repo. Configure here.