ci: fix SLSA predicate schema in attestation steps (#23768)

Follow-up to #23763.

The custom predicate uses the **SLSA v0.2 schema** (`invocation`,
`configSource`, `metadata`) but declares `predicate-type` as v1.
GitHub's attestation API rejects the mismatch:

```
Error: Failed to persist attestation: Invalid Argument -
predicate is not of type slsa1.ProvenancePredicate
```

This was masked before #23763 because the steps failed earlier on
missing `subject-digest`. Now that digests are provided, this is the
next error.

## Fix

Remove the custom `predicate-type` and `predicate` inputs. Without them,
`actions/attest@v4` auto-generates a correct SLSA v1 predicate from the
GitHub Actions OIDC token — which is what `gh attestation verify`
expects.

- `ci.yaml`: 3 attestation steps (main, latest, version-specific)
- `release.yaml`: 3 attestation steps (base, main, latest)

<details>
<summary>Verification (source code trace of actions/attest@v4)</summary>

1. **`detect.ts`**: No `predicate-type`/`predicate` → returns
`'provenance'` (not `'custom'`)
2. **`main.ts`**: `getPredicateForType('provenance')` →
`generateProvenancePredicate()`
3. **`@actions/toolkit/.../provenance.ts`**:
`buildSLSAProvenancePredicate()` fetches OIDC claims, builds correct v1
predicate with `buildDefinition`/`runDetails`

</details>

> 🤖 This PR was created with the help of Coder Agents, and needs a human
review. 🧑💻
This commit is contained in:
Atif Ali
2026-03-30 10:07:13 +00:00
committed by GitHub
parent 0b07ce2a97
commit 56171306ff
2 changed files with 0 additions and 168 deletions
-84
View File
@@ -1340,34 +1340,6 @@ jobs:
with:
subject-name: ghcr.io/coder/coder-preview
subject-digest: ${{ steps.docker_digests.outputs.main_digest }}
predicate-type: "https://slsa.dev/provenance/v1"
predicate: |
{
"buildType": "https://github.com/actions/runner-images/",
"builder": {
"id": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
},
"invocation": {
"configSource": {
"uri": "git+https://github.com/${{ github.repository }}@${{ github.ref }}",
"digest": {
"sha1": "${{ github.sha }}"
},
"entryPoint": ".github/workflows/ci.yaml"
},
"environment": {
"github_workflow": "${{ github.workflow }}",
"github_run_id": "${{ github.run_id }}"
}
},
"metadata": {
"buildInvocationID": "${{ github.run_id }}",
"completeness": {
"environment": true,
"materials": true
}
}
}
push-to-registry: true
- name: GitHub Attestation for Docker image (latest tag)
@@ -1378,34 +1350,6 @@ jobs:
with:
subject-name: ghcr.io/coder/coder-preview
subject-digest: ${{ steps.docker_digests.outputs.latest_digest }}
predicate-type: "https://slsa.dev/provenance/v1"
predicate: |
{
"buildType": "https://github.com/actions/runner-images/",
"builder": {
"id": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
},
"invocation": {
"configSource": {
"uri": "git+https://github.com/${{ github.repository }}@${{ github.ref }}",
"digest": {
"sha1": "${{ github.sha }}"
},
"entryPoint": ".github/workflows/ci.yaml"
},
"environment": {
"github_workflow": "${{ github.workflow }}",
"github_run_id": "${{ github.run_id }}"
}
},
"metadata": {
"buildInvocationID": "${{ github.run_id }}",
"completeness": {
"environment": true,
"materials": true
}
}
}
push-to-registry: true
- name: GitHub Attestation for version-specific Docker image
@@ -1416,34 +1360,6 @@ jobs:
with:
subject-name: ghcr.io/coder/coder-preview
subject-digest: ${{ steps.docker_digests.outputs.version_digest }}
predicate-type: "https://slsa.dev/provenance/v1"
predicate: |
{
"buildType": "https://github.com/actions/runner-images/",
"builder": {
"id": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
},
"invocation": {
"configSource": {
"uri": "git+https://github.com/${{ github.repository }}@${{ github.ref }}",
"digest": {
"sha1": "${{ github.sha }}"
},
"entryPoint": ".github/workflows/ci.yaml"
},
"environment": {
"github_workflow": "${{ github.workflow }}",
"github_run_id": "${{ github.run_id }}"
}
},
"metadata": {
"buildInvocationID": "${{ github.run_id }}",
"completeness": {
"environment": true,
"materials": true
}
}
}
push-to-registry: true
# Report attestation failures but don't fail the workflow
-84
View File
@@ -358,34 +358,6 @@ jobs:
with:
subject-name: ghcr.io/coder/coder-base
subject-digest: ${{ steps.build_base_image.outputs.digest }}
predicate-type: "https://slsa.dev/provenance/v1"
predicate: |
{
"buildType": "https://github.com/actions/runner-images/",
"builder": {
"id": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
},
"invocation": {
"configSource": {
"uri": "git+https://github.com/${{ github.repository }}@${{ github.ref }}",
"digest": {
"sha1": "${{ github.sha }}"
},
"entryPoint": ".github/workflows/release.yaml"
},
"environment": {
"github_workflow": "${{ github.workflow }}",
"github_run_id": "${{ github.run_id }}"
}
},
"metadata": {
"buildInvocationID": "${{ github.run_id }}",
"completeness": {
"environment": true,
"materials": true
}
}
}
push-to-registry: true
- name: Build Linux Docker images
@@ -493,34 +465,6 @@ jobs:
with:
subject-name: ghcr.io/coder/coder
subject-digest: ${{ steps.docker_digests.outputs.multiarch_digest }}
predicate-type: "https://slsa.dev/provenance/v1"
predicate: |
{
"buildType": "https://github.com/actions/runner-images/",
"builder": {
"id": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
},
"invocation": {
"configSource": {
"uri": "git+https://github.com/${{ github.repository }}@${{ github.ref }}",
"digest": {
"sha1": "${{ github.sha }}"
},
"entryPoint": ".github/workflows/release.yaml"
},
"environment": {
"github_workflow": "${{ github.workflow }}",
"github_run_id": "${{ github.run_id }}"
}
},
"metadata": {
"buildInvocationID": "${{ github.run_id }}",
"completeness": {
"environment": true,
"materials": true
}
}
}
push-to-registry: true
- name: GitHub Attestation for "latest" Docker image
@@ -531,34 +475,6 @@ jobs:
with:
subject-name: ghcr.io/coder/coder
subject-digest: ${{ steps.docker_digests.outputs.latest_digest }}
predicate-type: "https://slsa.dev/provenance/v1"
predicate: |
{
"buildType": "https://github.com/actions/runner-images/",
"builder": {
"id": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
},
"invocation": {
"configSource": {
"uri": "git+https://github.com/${{ github.repository }}@${{ github.ref }}",
"digest": {
"sha1": "${{ github.sha }}"
},
"entryPoint": ".github/workflows/release.yaml"
},
"environment": {
"github_workflow": "${{ github.workflow }}",
"github_run_id": "${{ github.run_id }}"
}
},
"metadata": {
"buildInvocationID": "${{ github.run_id }}",
"completeness": {
"environment": true,
"materials": true
}
}
}
push-to-registry: true
# Report attestation failures but don't fail the workflow