Update xos-tosca to xos-core 3.0

Change-Id: If2e94a15888a74131fdaec9a8bec1079ed8508e0
diff --git a/Dockerfile b/Dockerfile
index 9bef324..fb1fb82 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 
 # xosproject/xos-tosca
 
-FROM xosproject/xos-client:2.2.11
+FROM xosproject/xos-client:3.0.0
 
 # Set environment variables
 ENV CODE_SOURCE .