Fix Docker publish workflow attestation permissions

- Add attestations: write permission
- Add continue-on-error to prevent workflow failure
- Image was successfully published, this fixes the red X

Author: JSv4

.github/workflows/docker-publish.yml

@@ -28,6 +28,7 @@ jobs:
       contents: read
       packages: write
       id-token: write
+      attestations: write
 
     steps:
       - name: Checkout repository
@@ -88,6 +89,7 @@ jobs:
       - name: Generate artifact attestation
         if: github.event_name != 'pull_request'
         uses: actions/attest-build-provenance@v1
+        continue-on-error: true
         with:
           subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           subject-digest: ${{ steps.build-and-push.outputs.digest }}