[arm] Add manifest script (#8223)

Add script to make manifests pointing to docker images for different
platforms.
Related: https://github.com/google/oss-fuzz/issues/8164

infra/manifest.py

@@ -0,0 +1,61 @@
+#! /usr/bin/env python3
+# Copyright 2022 Google LLC
+#
+# 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
+#
+#      http://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.
+#
+################################################################################
+"""Script for pushing manifest files to docker that point to AMD64 and ARM
+images."""
+import logging
+import subprocess
+import sys
+
+
+def push_manifest(image):
+  """Pushes a manifest file in place of |image| for ARM and AMD64 versions of
+  that image."""
+  subprocess.run(['docker', 'pull', image], check=True)
+  amd64_image = f'{image}:manifest-amd64'
+  subprocess.run(['docker', 'tag', image, amd64_image], check=True)
+  subprocess.run(['docker', 'push', amd64_image], check=True)
+
+  arm_version = f'{image}-testing-arm'
+  subprocess.run(['docker', 'pull', arm_version], check=True)
+  arm64_image = f'{image}:manifest-arm64v8'
+  subprocess.run(['docker', 'tag', arm_version, arm64_image], check=True)
+
+  subprocess.run([
+      'docker', 'manifest', 'create', image, '--amend', arm64_image, '--amend',
+      amd64_image
+  ],
+                 check=True)
+  subprocess.run(['docker', 'manifest', 'push', image], check=True)
+  return True
+
+
+def main():
+  """Sets up manifests for base-builder and base-runner so they can be used for
+  ARM builds."""
+  logging.info('Doing simple gcloud command to ensure 2FA passes. '
+               'Otherwise docker push fails.')
+  subprocess.run(['gcloud', 'projects', 'list', '--limit=1'], check=True)
+
+  images = [
+      'gcr.io/oss-fuzz-base/base-builder', 'gcr.io/oss-fuzz-base/base-runner'
+  ]
+  results = [push_manifest(image) for image in images]
+  return 0 if all(results) else 1
+
+
+if __name__ == '__main__':
+  sys.exit(main())