Update Jenkinsfile

Jenkinsfile

@@ -1,20 +1,15 @@
 pipeline {
-    agent any
-    tools {
-        maven 'Maven 3.3.9'
-        jdk 'jdk8'
+    agent {
+        docker {
+            image 'maven:3-alpine'
+            args '-v /root/.m2:/root/.m2'
+        }
+    }
+    options {
+        skipStagesAfterUnstable()
     }
     stages {
-        stage ('Initialize') {
-            steps {
-                sh '''
-                    echo "PATH = ${PATH}"
-                    echo "M2_HOME = ${M2_HOME}"
-                '''
-            }
-        }
-
-        stage ('Build') {
+        stage('Build') {
             steps {
                 sh 'mvn clean install'
             }