Update Jenkinsfile

Jenkinsfile

@@ -5,11 +5,11 @@ pipeline {
   	stage('Maven Install') {
     	agent {
       	docker {
-        	image 'maven'
+        	image 'maven:3.7.0'
         }
       }
       steps {
-      	sh 'mvn clean package'
+      	sh 'mvn clean install'
       }
     }
   }