Add Cloud Build sync job for reserved and premium lists (#2302)

* Change tld-update to db-object-updater

* rename sync_tlds.sh to sync_db_objects.sh

* Change to configured command name

* Change environment to sandbox explicitly for testing on alpha

* Add remaining object steps and change cloudbuild-tld-sync to cloudbuild-sync-db-objects

* Add build_environment flag

* Change order of command and directory

* Uncomment out reserved list part

release/db-object-updater/Dockerfile

@@ -0,0 +1,22 @@
+# Copyright 2023 The Nomulus Authors. All Rights Reserved.
+#
+# 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.
+
+ARG PROJECT_ID
+ARG TAG_NAME
+FROM gcr.io/${PROJECT_ID}/builder:${TAG_NAME}
+
+COPY nomulus.jar /
+COPY sync_db_objects.sh /usr/local/bin
+
+ENTRYPOINT [ "bash", "sync_db_objects.sh" ]