Reference

Chainguard's Custom Assembly Images
How to use Chainguard's Custom Image Assembly tool.
Network Requirements
Using Chainguard Images with firewalls, access control lists, and proxies
Overview of the Chainguard IAM Model
Overview of Chainguard Identity and Access Management
Rego Policies
Writing Rego-based policies for Sigstore Policy Controller
CISA Secure Software Development Attestation Form (Draft)
Secure Software Development Framework (SSDF) Table, NIST SP 800-218
Minimum Attestation References