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Feature: Add support for verifying base image policies.
🎁 This implements the very basics from my recent comment on #356. This still needs a bunch of work, but some playing with it and `go run` seem to demonstrate what I'd hope for. Things I'd like to do still: - Add validation that warns/errors if aspects of CIP irrelevant outside K8s are used (e.g. `match:`, `includeSpec:`), - Expand unit test coverage significantly, - Move `pkg/policy` upstream to `sigstore/policy-controller` to facilitate using this in other projects with similar ease (e.g. kaniko, buildpacks, ...) /kind feature
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,30 @@ | ||
| baseImageOverrides: | ||
| github.com/google/ko: golang:1.19 | ||
| github.com/google/ko: cgr.dev/chainguard/go | ||
|
|
||
| builds: | ||
| - id: ko | ||
| ldflags: | ||
| - "{{ .Env.LDFLAGS }}" | ||
|
|
||
| verification: | ||
| # Override the default of "warn" to "deny" | ||
| noMatchPolicy: deny | ||
| policies: | ||
| # Expand the default base image policy (covers static) to include | ||
| # all Chainguard images (namely Go, see above). | ||
| - data: | | ||
| apiVersion: policy.sigstore.dev/v1beta1 | ||
| kind: ClusterImagePolicy | ||
| metadata: | ||
| name: chainguard-images | ||
| spec: | ||
| images: | ||
| - glob: cgr.dev/chainguard/** | ||
| authorities: | ||
| - keyless: | ||
| url: https://fulcio.sigstore.dev | ||
| identities: | ||
| - issuer: https://token.actions.githubusercontent.com | ||
| subject: https://github.com/chainguard-images/images/.github/workflows/release.yaml@refs/heads/main | ||
| ctlog: | ||
| url: https://rekor.sigstore.dev |
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