jenkinsfile change

Jenkinsfile

@@ -16,7 +16,7 @@ pipeline {
         stage('Building image') {
             steps {
                 script {
-                    dockerImage = bat(script: "docker build -t ${imagename} .", returnStdout: true).trim()
+                    bat "docker build -t ${imagename}:${BUILD_NUMBER} -t ${imagename}:latest ."
                 }
             }
         }