[Emu] Changes default OpenFlow port to 6653.

Change-Id: Ib1cf28579e42d5dc136d0b81eec1d317e372aac8
diff --git a/tools/build/docker/Dockerfile b/tools/build/docker/Dockerfile
index fd61ad8..ee9666a 100644
--- a/tools/build/docker/Dockerfile
+++ b/tools/build/docker/Dockerfile
@@ -45,11 +45,11 @@
 
 
 # Ports
-# 6633 - OpenFlow
+# 6653 - OpenFlow
 # 8181 - GUI
 # 8101 - ONOS CLI
 # 9876 - ONOS CLUSTER COMMUNICATION
-EXPOSE 6633 8181 8101 9876
+EXPOSE 6653 8181 8101 9876
 
 # Get ready to run command
 WORKDIR /root/onos