diff --git a/Dockerfile b/Dockerfile
index 07a0b87..c05784e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,11 @@
-FROM amazoncorretto:11-al2023-jdk⁠
-WORKDIR /app
-COPY target/maven-standalone-application*.jar maven-standalone-application.jar 
-CMD ["java","-jar","maven-standalone-application.jar"]
+# ---------- Stage 1: Runtime only -------
+FROM eclipse-temurin:21-jre-jammy
+# Set working directory inside the container
+WORKDIR /app
+
+# The JAR will be specified dynamically via build args
+ARG JAR_FILE
+COPY ${JAR_FILE} app.jar
+
+EXPOSE 8080
+ENTRYPOINT ["java", "-jar", "app.jar"]
diff --git a/Jenkinsfile b/Jenkinsfile
index 8b13789..4e4e9e5 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1 +1,35 @@
-
+pipeline {
+    agent any
+    stages {
+        stage('Build') {
+            agent {
+                docker {
+                    image 'maven:amazoncorretto'
+                    reuseNode true
+                }
+            }
+            steps {
+                sh '''
+                    echo "Cleaning maven cache and target folder..."
+                    rm -rf target
+                    mvn clean install
+                    mvn package
+                    mvn --version
+                    echo "Hello Welcome to Jenkins"
+                    ls -la
+                '''
+            }
+        }
+        stage('Test') {
+            steps {
+                echo "Running tests..."
+                sh '''
+                   mvn test
+                   # Ensure we're using bash
+                   echo "Running tests..."
+                   bash -c 'a=(1 3 4 5); echo "Array elements: ${a[@]: -2}"'
+                '''
+            }
+        }
+    }
+}
diff --git a/Jenkinsfile1 b/Jenkinsfile1
new file mode 100644
index 0000000..e9914c3
--- /dev/null
+++ b/Jenkinsfile1
@@ -0,0 +1,44 @@
+pipeline{
+    agent any
+    tools{
+        maven "MAVEN"
+        jdk "JDK17"
+    }
+    stages{
+        stage("Fetch code from GitHub"){
+            steps{
+                echo "========fetching code from GitHub========"
+                git branch: 'master', url: 'https://github.com/Bashsha12/maven-standalone-application.git'
+            }
+            
+        }
+        stage('Unittest'){
+            steps{
+                echo "========Running unit tests========"
+                sh 'mvn clean test'
+            }
+        }
+        stage('Build'){
+            steps{
+                echo "========Building the project========"
+                sh '''
+                mvn install -DskipTests=true
+                '''
+                
+                echo "========Build completed========"
+            }
+            post{
+                success{
+                    echo "========Build was successful========"
+                    echo "========Archiving artifacts========"
+                    archiveArtifacts artifacts: '**/target/*.jar'
+                    echo "========Artifacts archived========"
+                }
+                failure{
+                    echo "========Build failed========"
+                }
+            }
+    
+}
+    }
+}
\ No newline at end of file
diff --git a/Jenkinsfile2 b/Jenkinsfile2
new file mode 100644
index 0000000..022ceb5
--- /dev/null
+++ b/Jenkinsfile2
@@ -0,0 +1,92 @@
+pipeline {
+    agent any
+    tools {
+        maven "MAVEN"
+        jdk "JDK17"
+    }
+    stages {
+        stage("Fetch code from GitHub") {
+            steps {
+                echo "========fetching code from GitHub========"
+                git branch: 'master', url: 'https://github.com/Bashsha12/maven-standalone-application.git'
+            }
+        }
+        stage("Build") {
+            steps {
+                echo "========building the application========"
+
+                sh 'mvn clean install -DskipTests=true'
+                sh 'mvn package'
+                sh 'mvn clean package'
+            }
+            post {
+                success {
+                    echo "========Build was successful========"
+                    echo "========Archiving artifacts========"
+                    archiveArtifacts artifacts: '**/target/*.jar'
+                    echo "========Artifacts archived========"
+                }
+                failure {
+                    echo "========Build failed========"
+                }
+            }
+        }
+        stage("Unit Test") {
+            steps {
+                echo "========Running unit tests========"
+                sh 'mvn test'
+            }
+        }
+        stage("Checkstyle") {
+            steps {
+                echo "========Running checkstyle========"
+                sh 'mvn checkstyle:checkstyle'
+            }
+        }
+        stage("SonarQube") {
+            environment {
+                scannerHome = tool 'sonar7.1'
+            }
+            steps {
+                echo "========Running SonarQube analysis========"
+                withSonarQubeEnv('sonarsever') {
+                    sh '''
+                        ${scannerHome}/bin/sonar-scanner -Dsonar.projectKey=maven-standalone-application \
+                        -Dsonar.projectName=maven-standalone-application \
+                        -Dsonar.projectVersion=1.0 \
+                        -Dsonar.sources=src/ \
+                        -Dsonar.java.binaries=target/classes \
+                        -Dsonar.junit.reportPaths=target/surefire-reports/ \
+                        -Dsonar.jacoco.reportPaths=target/jacoco.exec \
+                        -Dsonar.java.checkstyle.reportPath=target/checkstyle-result.xml \
+                        '''
+                }
+            }
+        }
+        stage("SonarQube Quality Gate") {
+            steps {
+                timeout(time: 1, unit: 'HOURS') {
+                    waitForQualityGate abortPipeline: true
+                }
+            }
+        }
+        stage('Upload to Nexus') {
+            steps {
+                echo "========Uploading artifacts to Nexus========"
+                nexusArtifactUploader artifacts: [
+                    [artifactId: 'maven-standalone-application',
+                     classifier: '', 
+                    file: 'target/maven-standalone-application-0.0.1-SNAPSHOT.jar', type: 'jar']
+                ], 
+                credentialsId: 'nexuslogin', 
+                groupId: 'QA', 
+                nexusUrl: '172.31.41.195:8081', 
+                nexusVersion: 'nexus3', 
+                protocol: 'http', 
+                repository: 'maven-standalone-application-repo',
+                version: "${env.BUILD}-${env.BUILD_TIMESTAMP}"
+                echo "========Upload to Nexus completed========"
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Jenkinsfile3 b/Jenkinsfile3
new file mode 100644
index 0000000..8e68a69
--- /dev/null
+++ b/Jenkinsfile3
@@ -0,0 +1,138 @@
+def COLOR_MAP = [
+    'SUCCESS': 'good',
+    'FAILURE': 'danger',
+    'ABORTED': '#808080',
+    'UNSTABLE': 'warning'
+]
+pipeline{
+    agent {
+       label 'master' 
+    }
+    tools {
+        maven 'Maven'
+        jdk 'Java21'
+    }
+    environment{
+        sonarqube_server = 'Sonar'          
+        DOCKERHUB_CRED= 'DOCKERHUB_CRED'
+        DOCKER_REGISTRY= "bashadockerhubdemo"
+        DOCKER_IMAGE_NAME= "maven-standalone-app"
+        AWSRegion= "ap-south-1"
+        ClusterName= "my-ecs-cluster"   
+        ServiceName= "maven-standalone-service"
+    }
+    stages{
+        stage("Checkout"){
+            steps{
+                git url: 'https://github.com/Bashsha12/maven-standalone-application.git'
+            }
+        }
+        stage("Build stage"){
+            steps{
+                sh 'mvn clean package -DskipTests=true'
+                stash includes: 'target/*.jar', name: 'app-jar'
+            }
+        }
+        stage("Testing stage"){
+            parallel{
+                stage("Unit Test"){
+                    steps{
+                        sh 'mvn test'
+                    }
+                }
+                stage("Integration Test"){
+                    steps{
+                        sh 'mvn verify -DskipUnitTests=true'
+                    }
+                }
+                stage("Checkstyle Report"){
+                    steps{
+                        sh 'mvn checkstyle:checkstyle'
+                    }
+                }
+            }
+        }
+        stage("SonarQube Analysis"){
+            steps{
+                script {
+                    def scannerHome = tool 'Sonar'
+                    withSonarQubeEnv("${sonarqube_server}") {
+                        sh """
+                        ${scannerHome}/bin/sonar-scanner \
+                        -Dsonar.projectKey=maven-standalone-application \
+                        -Dsonar.projectName=maven-standalone-application \
+                        -Dsonar.projectVersion=1.0 \
+                        -Dsonar.sources=src/ \
+                        -Dsonar.java.binaries=target/classes \
+                        -Dsonar.java.checkstyle.reportPaths=target/checkstyle-result.xml \
+                        -Dsonar.java.coveragePlugin=jacoco \
+                        -Dsonar.jacoco.reportPaths=target/jacoco.exec \
+                        -Dsonar.junit.reportPaths=target/surefire-reports/
+                        """
+                    }
+                }
+            }
+
+        }
+        stage("Quality Gate"){
+            steps{
+                script {
+                    timeout(time: 1, unit: 'MINUTES') {
+                        def qg = waitForQualityGate()
+                        if (qg.status != 'OK') {
+                            error "Pipeline aborted due to quality gate failure: ${qg.status}"
+                        }
+                    }
+                }
+            }
+        }
+        /*
+        stage("Build and Push Docker Image"){
+            steps{
+                unstash 'app-jar'
+                script {
+                    def imageTag = "${DOCKER_REGISTRY}/${DOCKER_IMAGE_NAME}:${env.BUILD_NUMBER}"
+                    def jarFile = sh(script: "ls target/*.jar | head -n 1", returnStdout: true).trim()
+                    withCredentials([usernamePassword(credentialsId: "${DOCKERHUB_CRED}", usernameVariable: 'DOCKERHUB_USER', passwordVariable: 'DOCKERHUB_PASS')]) {
+                    sh "docker build --cache-from --build-arg JAR_FILE=${jarFile} -t ${imageTag} ${WORKSPACE}"
+                    sh 'echo $DOCKERHUB_PASS | docker login -u $DOCKERHUB_USER --password-stdin'
+                    sh "docker push ${imageTag}"
+                    }
+                }
+            }
+        }
+        stage("Deploy to AWS ECS"){
+            steps{
+                script {
+                    sh "aws ecs update-service --cluster ${ClusterName} --service ${ServiceName} --force-new-deployment --region ${AWSRegion}"
+                }
+            }
+        }*/
+    }
+    post {
+        always {
+            script {
+                def result = currentBuild.currentResult
+                def emoji = ""
+                if (result == "SUCCESS") {
+                    emoji = ":smile:"
+                } else if (result == "FAILURE") {
+                    emoji = ":cry:"
+                } else if (result == "ABORTED") {
+                    emoji = ":no_entry_sign:"
+                } else {
+                    emoji = ":warning:"
+                }
+
+                slackSend(
+                    channel: '#devopscicd',
+                    color: COLOR_MAP[result],
+                    message: "${emoji} *${result}*: Job `${env.JOB_NAME}` build #${env.BUILD_NUMBER} \nCheck console: ${env.BUILD_URL}"
+                )
+            }
+        }
+    }
+
+
+}
+
diff --git a/test b/test
new file mode 100644
index 0000000..998f829
--- /dev/null
+++ b/test
@@ -0,0 +1 @@
+sample 
\ No newline at end of file