[CORD-3100] Refactoring and documenting the ONOS Service

Change-Id: Ida83935798a2a99b538f6ccdc55cc26f3148ffe3
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 6aa3dc3..2027b65 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# docker build -t xosproject/onos-synchronizer:candidate -f Dockerfile.synchronizer .
+
 # xosproject/onos-synchronizer
 
 FROM xosproject/xos-synchronizer-base:candidate
@@ -51,4 +53,3 @@
       org.opencord.component.xos.vcs-ref=$org_opencord_component_xos_vcs_ref
 
 CMD ["/usr/bin/python", "/opt/xos/synchronizers/onos/onos-synchronizer.py"]
-