update pipeline setup

CI/Jenkinsfile

@@ -2,10 +2,8 @@
 
 pipeline {
     agent {
-    node {
-        label 'agent2'
-    }
         dockerfile {
+            label 'agent2'
             dir 'CI'
             args '--network host -v /cvmfs:/cvmfs:shared -v /root/.ssh/mpesoft_key:/root/.ssh/mpesoft_key:ro --privileged'
         }