add attestation-id and attestation-url outputs (#137)

Signed-off-by: Brian DeHamer <bdehamer@github.com>

Author: bdehamer

README.md

@@ -109,9 +109,11 @@ See [action.yml](action.yml)
 
 <!-- markdownlint-disable MD013 -->
 
-| Name          | Description                                                    | Example                |
-| ------------- | -------------------------------------------------------------- | ---------------------- |
-| `bundle-path` | Absolute path to the file containing the generated attestation | `/tmp/attestaion.json` |
+| Name              | Description                                                    | Example                                          |
+| ----------------- | -------------------------------------------------------------- | ------------------------------------------------ |
+| `attestation-id`  | GitHub ID for the attestation                                  | `123456`                                         |
+| `attestation-url` | URL for the attestation summary                                | `https://github.com/foo/bar/attestations/123456` |
+| `bundle-path`     | Absolute path to the file containing the generated attestation | `/tmp/attestation.json`                          |
 
 <!-- markdownlint-enable MD013 -->
 

action.yml

@@ -51,6 +51,12 @@ outputs:
   bundle-path:
     description: 'The path to the file containing the attestation bundle.'
     value: ${{ steps.attest.outputs.bundle-path }}
+  attestation-id:
+    description: 'The ID of the attestation.'
+    value: ${{ steps.attest.outputs.attestation-id }}
+  attestation-url:
+    description: 'The URL for the attestation summary.'
+    value: ${{ steps.attest.outputs.attestation-url }}
 
 runs:
   using: 'composite'
@@ -59,7 +65,7 @@ runs:
       id: generate-sbom-predicate
       with:
         sbom-path: ${{ inputs.sbom-path }}
-    - uses: actions/attest@v2.0.1
+    - uses: actions/attest@v2.1.0
       id: attest
       with:
         subject-path: ${{ inputs.subject-path }}