CORD-2772 set version number for vsg service

Change-Id: I9dd77b39b29675b525ca8cfe3a28a4fc0400e9ea
diff --git a/xos/synchronizer/Dockerfile.synchronizer b/xos/synchronizer/Dockerfile.synchronizer
index cde6a57..b5c71f5 100644
--- a/xos/synchronizer/Dockerfile.synchronizer
+++ b/xos/synchronizer/Dockerfile.synchronizer
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# This Dockerfile is DEPRECATED and will be removed imminently.
+
 # docker build -t xosproject/vsg-synchronizer:candidate -f Dockerfile.synchronizer .
 
 # xosproject/vsg-synchronizer