Update Jenkinsfile

Jenkinsfile

@@ -12,6 +12,15 @@ pipeline {
             }
         }
 
+        stage('Install Tools') {
+            steps {
+                sh '''
+                    apt-get update -q
+                    apt-get install -y maven
+                '''
+            }
+        }
+
         stage('Build') {
             steps {
                 sh 'mvn -B verify'