set ONOS_ROOT

Change-Id: Ic71fa8e66209434057e77ba858329f8599a342ee
diff --git a/Jenkinsfile b/Jenkinsfile
index f85abea..1fc3c85 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -5,6 +5,7 @@
         stage('build') {
             steps {
                 sh '''#!/bin/bash -l
+                ONOS_ROOT=`pwd`
                 source tools/build/envDefaults
                 onos-buck build onos
                 '''