Add cosign keyless signing to Docker image release#5
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haasonsaas merged 1 commit intomainfrom Mar 9, 2026
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Signs the container image after push using Sigstore keyless signing (GitHub Actions OIDC). This enables Kyverno signature verification in the homelab-k8s cluster. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
id-token: writepermission for GitHub Actions OIDC token (required for keyless signing)ghcr.io/haasonsaas/diffscopeafter push using the build digestThis enables Kyverno image signature verification in the homelab-k8s cluster (see haasonsaas/homelab-k8s#455).
Test plan
cosign verifysucceeds against the signed image🤖 Generated with Claude Code