Reference
Rego Policies
Ubuntu Compatibility
Red Hat UBI Compatibility
chainctl Reference
Writing Rego-based policies for Sigstore Policy Controller
CISA Secure Software Development Attestation Form (Draft)
Differences between Chainguard Containers and Ubuntu third-party images
Secure Software Development Framework (SSDF) Table, NIST SP 800-218
Differences between Chainguard Containers and Red Hat UBI third-party images
Minimum Attestation References
chainctl Reference Documentation