fix: replace gosu with su-exec (CVE-2025-68121)#1
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gosu 1.19 is built with Go 1.24.6 which contains CVE-2025-68121 (fixed in 1.24.13). No newer gosu release available. su-exec is a minimal C alternative available in Alpine packages, providing the same CLI interface. Symlink gosu -> su-exec maintains compatibility with docker-entrypoint.sh. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Disable ci.yml and verify-templating.yml (upstream CI, not needed) - Add sbom.yml: build image, generate CycloneDX SBOM (Syft), scan vulnerabilities (Grype), upload artifact Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Why
gosu 1.19 is built with Go stdlib 1.24.6 which contains CVE-2025-68121 (fixed in 1.24.13). No newer gosu release available. GCP Marketplace Container Images review rejects images with this CVE.
What
Tested: postgres 18.3 starts, accepts connections,
exec gosu postgresworks via symlink.