Added multi-stage docker file

Dockerfile

@@ -0,0 +1,11 @@
+# build stage——
+FROM maven:3.8.6-openjdk-8 AS builder
+WORKDIR /app
+COPY . /app
+RUN mvn clean install
+
+# final image
+FROM tomcat:9.0
+RUN apt-get update && apt-get install vim -y
+COPY --from=builder /app/target/ekart.war /usr/local/tomcat/webapp
+ENTRYPOINT /usr/local/tomcat/bin/startup.sh && bash

Jenkinsfile

@@ -1,44 +1,23 @@
 pipeline {
     agent any
+
     triggers {
         cron('H/2 * * * 1-5')
     }
-    tools {
-        maven 'Maven3'
-        jdk 'java8'
-
-    }
     stages {
-      stage('Checkout') {
-                steps {
-                                checkout scm                           
-                }
-                    }
-        stage ('Initialize') {
+        stage('Checkout') {
             steps {
-                sh '''
-                    echo "PATH = ${PATH}"
-                    echo "M2_HOME = ${M2_HOME}"
-                '''
+                checkout scm
             }
         }
 
-        stage ('Build') {
+        stage('Build') {
             steps {
-                sh 'mvn -Dmaven.test.failure.ignore=true install' 
-            }
-            post {
-                success {
-                    junit 'target/surefire-reports/**/*.xml' 
-                }
-            }  
-        }
-
-        stage ('Deploy'){
-          steps{
-            sh  'echo "deploying into qa server"'
+                sh '''
+                    docker build -f Dockerfile -t ekart .
+                '''
             }
+
         }
     }
-
 }