Deploy release for each branch update.

Signed-off-by: Lantao Liu <lantaol@google.com>

hack/push.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+# Copyright 2017 The Kubernetes 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
+#
+#     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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+source $(dirname "${BASH_SOURCE[0]}")/test-utils.sh
+
+DEPLOY_BUCKET=${DEPLOY_BUCKET:-"cri-containerd-staging"}
+BUILD_DIR=${BUILD_DIR:-"_output"}
+TARBALL=${TARBALL:-"cri-containerd.tar.gz"}
+
+release_tar=${ROOT}/${BUILD_DIR}/${TARBALL}
+if [ ! -e ${release_tar} ]; then
+  echo "Release tarball is not built"
+  exit 1
+fi
+
+if ! gsutil ls "gs://${DEPLOY_BUCKET}" > /dev/null; then
+  create_ttl_bucket ${DEPLOY_BUCKET}
+fi
+
+# TODO(random-liu): Add checksum for the tarball.
+gsutil cp ${release_tar} "gs://${DEPLOY_BUCKET}/"
+echo "Release tarball is uploaded to:
+  https://storage.googleapis.com/${DEPLOY_BUCKET}/${TARBALL}"