signed-by-github-actions.yaml

# Copyright 2022 The Sigstore Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#
# Name: image-is-signed-by-github-actions
#
# Description:
#   Assert that images are signed by a specific Github Actions
#   workflow on the main branch.
#

apiVersion: policy.sigstore.dev/v1alpha1
kind: ClusterImagePolicy
metadata:
  name: image-is-signed-by-github-actions
spec:
  images:
  # All images in example repository matched
  - glob: "**"
  authorities:
  - keyless:
      # Signed by the public Fulcio certificate authority
      url: https://fulcio.sigstore.dev
      identities:
      # Matches the Github Actions OIDC issuer
      - issuer: https://token.actions.githubusercontent.com
        # Matches a specific github workflow on main branch. Here we use the
        # sigstore policy controller example testing workflow as an example.
        subject: "https://github.com/sigstore/policy-controller/.github/workflows/policy-tester-examples.yml@refs/heads/main"
    ctlog:
      url: https://rekor.sigstore.dev