Release

Change-Id: I2e18e05e36a36aca810549313c6c05017cb58f60
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index dda473d..272598d 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,7 +16,7 @@
 
 # xosproject/onos-synchronizer
 
-FROM xosproject/xos-synchronizer-base:master
+FROM xosproject/xos-synchronizer-base:2.1.0
 
 COPY xos/synchronizer /opt/xos/synchronizers/onos
 COPY VERSION /opt/xos/synchronizers/onos/