diff --git a/tools/gcp/utils/gcr_upload.py b/tools/gcp/utils/gcr_upload.py
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+++ b/tools/gcp/utils/gcr_upload.py
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+#!/usr/bin/env python2.7
+# Copyright 2017, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Upload docker images to Google Container Registry."""
+
+from __future__ import print_function
+
+import argparse
+import atexit
+import os
+import shutil
+import subprocess
+import tempfile
+
+argp = argparse.ArgumentParser(description='Run interop tests.')
+argp.add_argument('--gcr_path',
+                  default='gcr.io/grpc-testing',
+                  help='Path of docker images in Google Container Registry')
+
+argp.add_argument('--gcr_tag',
+                  default='latest',
+                  help='the tag string for the images to upload')
+
+argp.add_argument('--with_files',
+                  default=[],
+                  nargs='+',
+                  help='additional files to include in the docker image')
+
+argp.add_argument('--with_file_dest',
+                  default='/var/local/image_info',
+                  help='Destination directory for with_files inside docker image')
+
+argp.add_argument('--images',
+                  default=[],
+                  nargs='+',
+                  help='local docker images in the form of repo:tag ' +
+                  '(i.e. grpc_interop_java:26328ad8) to upload')
+
+argp.add_argument('--keep',
+                  action='store_true',
+                  help='keep the created local images after uploading to GCR')
+
+
+args = argp.parse_args()
+
+def upload_to_gcr(image):
+  """Tags and Pushes a docker image in Google Containger Registry.
+
+  image: docker image name, i.e. grpc_interop_java:26328ad8
+
+  A docker image image_foo:tag_old will be uploaded as
+     <gcr_path>/image_foo:<gcr_tag>
+  after inserting extra with_files under with_file_dest in the image.  The
+  original image name will be stored as label original_name:"image_foo:tag_old".
+  """
+  tag_idx = image.find(':')
+  if tag_idx == -1:
+    print('Failed to parse docker image name %s' % image)
+    return False
+  new_tag = '%s/%s:%s' % (args.gcr_path, image[:tag_idx], args.gcr_tag)
+
+  lines = ['FROM ' + image]
+  lines.append('LABEL original_name="%s"' % image)
+
+  temp_dir = tempfile.mkdtemp()
+  atexit.register(lambda: subprocess.call(['rm', '-rf', temp_dir]))
+
+  # Copy with_files inside the tmp directory, which will be the docker build
+  # context.
+  for f in args.with_files:
+    shutil.copy(f, temp_dir)
+    lines.append('COPY %s %s/' % (os.path.basename(f), args.with_file_dest))
+
+  # Create a Dockerfile.
+  with open(os.path.join(temp_dir, 'Dockerfile'), 'w') as f:
+     f.write('\n'.join(lines))
+
+  build_cmd = ['docker', 'build', '--rm', '--tag', new_tag, temp_dir]
+  subprocess.check_output(build_cmd)
+
+  if not args.keep:
+    atexit.register(lambda: subprocess.call(['docker', 'rmi', new_tag]))
+
+  # Upload to GCR.
+  if args.gcr_path:
+    subprocess.call(['gcloud', 'docker', '--', 'push', new_tag])
+
+  return True
+
+
+for image in args.images:
+  upload_to_gcr(image)