Update Jenkinsfile

Jenkinsfile

 pipeline {
-	agent any
+  agent any
     tools {
-    	maven 'maven3'
+      maven 'maven3'
                  jdk 'JDK8'
     }
     stages {      
         stage('Build maven ') {
             steps { 
                     sh 'pwd'
-		    
-		 
+        
+     
                     sh 'mvn  clean install package'
-          }
-        } 
-   }
-   stage('Copy Artifact') {
-      steps { 
-          sh 'cp -r petclinic-build/target/*.war docker'
-       }  
-    }
-	       
-   stage('Build docker image') {
-      steps {
+                }
+            } 
+        }
+       stage('Copy Artifact') {
+           steps { 
+                   sh 'cp -r petclinic-build/target/*.war docker'
+           }  
+       }
+         
+       stage('Build docker image') {
+           steps {
                                  
                     docker.build('prawinkorvi/petclinic-build/docker')
                     docker.withRegistry('https://registry.hub.docker.com', 'dockerhub') {