Demo

.dockerignore

@@ -0,0 +1,12 @@
+# Ignore specific files or directories when building the Docker image
+
+# Exclude the following files and directories
+.git
+.idea
+.vscode
+node_modules
+
+# Exclude all files and directories inside the target directory
+# ! allows including specific files or directories even if they are excluded by a pattern
+target/*
+!target/WebApp.war

Dockerfile

@@ -2,4 +2,5 @@ FROM tomcat
 WORKDIR webapps 
 COPY target/WebApp.war .
 RUN rm -rf ROOT && mv WebApp.war ROOT.war
-ENTRYPOINT ["sh", "/usr/local/tomcat/bin/startup.sh"]
+RUN /usr/local/tomcat/bin/startup.sh
+ENTRYPOINT [ "sleep", "3600"]

Jenkinsfile

@@ -1,83 +1,90 @@
-def getDockerTag(){
+def getDockerTag() {
     def tag = sh script: 'git rev-parse --short HEAD', returnStdout: true
     return tag
-    }
+}
 
-pipeline{
+pipeline {
     agent any
-    environment{
+    environment {
         Docker_tag = getDockerTag()
         docker_pws = credentials('docker-hub-password')
     }
-    stages{
-        stage("Sonar scan"){
+    stages {
+        stage("Sonar scan") {
             agent {
                 docker {
                     image 'maven'
                     args '-v /root/.m2:/root/.m2'
                 }
             }
-            steps{
-                script{
-                   sh "echo executing sonar scan"
-                   // sh "sleep 90"
+            steps {
+                script {
+                    sh "echo executing sonar scan"
+                    // sh "sleep 90"
                 }
             }
         }
 
-        stage('build the application'){
+        stage('build the application') {
             agent {
                 docker {
                     image 'maven'
                     args '-v /root/.m2:/root/.m2'
                 }
             }
-            steps{
-                script{
-                    sh "mvn clean install"
+            steps {
+                script {
+                    sh "mvn clean package"
                 }
             }
         }
+       stage('Debug') {
+         steps {
+          sh 'ls -al '
+          sh 'cd src/ '   
+          sh 'ls -al '   
+          }
+          }
 
-        stage('docker build'){
-            steps{
-                script{
+        stage('docker build') {
+            steps {
+                script {
                     sh """
-                    docker build . -t deekshithsn/java-app-hbc:$Docker_tag
+                    pwd
+                    cp -r ../workspace@2/target .
+                    docker build . -t deekshithsn/java-app-hbc:\$Docker_tag
                     """
                 }
             }
         }
 
-
-        stage('docker login & push'){
-            steps{
-                script{
+        stage('docker login & push') {
+            steps {
+                script {
                     sh """
-                       docker login -u deekshithsn -p $docker_pws 
-                       docker push deekshithsn/java-app-hbc:$Docker_tag
+                       docker login -u deekshithsn -p \$docker_pws 
+                       docker push deekshithsn/java-app-hbc:\$Docker_tag
                     """
                     addBadge(icon: 'save.gif', text: 'docker repo', link: 'https://hub.docker.com/repository/docker/deekshithsn/java-app-hbc')
-                    currentBuild.description = "deekshithsn/java-app-hbc:$Docker_tag"
+                    currentBuild.description = "deekshithsn/java-app-hbc:\$Docker_tag"
                 }
             }
         }
 
-        stage('deploy the application'){
-            steps{
-                script{
+        stage('deploy the application') {
+            steps {
+                script {
                     sh """
-                    docker rm $( docker stop $( docker ps -aq))
-                    docker run -d -p 9000:8080 deekshithsn/java-app-hbc:$Docker_tag
+                    docker rm \$( docker stop \$( docker ps -aq))
+                    docker run -d -p 9000:8080 deekshithsn/java-app-hbc:\$Docker_tag
                     """
                 }
             }
         }
-
     }
 
     post {
-        always{
+        always {
             cleanWs()
         }
     }

src/main/webapp/index.jsp

@@ -31,7 +31,7 @@
                 <span class="icon-bar"></span>
                 <span class="icon-bar"></span>
             </button>
-            <a class="navbar-brand" href="#">Devops-training</a>
+            <a class="navbar-brand" href="#">DevOps Simple APP- HBC Demo </a>
         </div>
         <div class="navbar-collapse collapse">
             <form class="navbar-form navbar-right" role="form">