Code enhancements

Jenkinsfile

@@ -57,9 +57,12 @@ pipeline {
                 error('Unknown cluster')
           }
         }
+
+        script {
           sh "set"
           currentBuild.result = 'ABORTED'
           error ('Emergency stop')
+        }
 
         echo "Building ${DOCKER_REGISTRY}/iru/${DOCKER_IMAGE}:${repo}-${BUILD_NUMBER}."
         sh "docker build --build-arg repo=${repo} --no-cache -t ${DOCKER_REGISTRY}/iru/${DOCKER_IMAGE}:${repo}-${BUILD_NUMBER} ."