Added Jenkinsfile for DockerHub + Kubernetes deploy

Jenkinsfile

@@ -2,74 +2,47 @@ pipeline {
     agent any
 
     environment {
-        IMAGE_NAME      = 'myapp'
-        IMAGE_TAG       = 'latest'
-        DOCKERHUB_USER  = 'vipin2025devops'
-        DEPLOYMENT_FILE = 'k8s/deployment.yaml'
-        SERVICE_FILE    = 'k8s/service.yaml'
-        KUBECONFIG      = 'C:\\Users\\rlkri\\.kube\\config'
+        DOCKERHUB_CREDENTIALS = credentials('dockerhub-creds')
+        DOCKER_IMAGE = "vipin2025devops/myapp"
+        K8S_DEPLOYMENT = "k8s/deployment.yaml"
     }
 
     stages {
-        stage('Checkout Code') {
+        stage('Checkout') {
             steps {
-                git branch: 'main',
-                    url: 'https://git.opsmonsters.in/vipin.p/my-react-app.git',
-                    credentialsId: 'git-opsmonsters-cred'
+                git branch: 'main', url: 'https://git.opsmonsters.in/vipin.p/my-react-app'
             }
         }
 
-        stage('Build & Push Docker Image') {
+        stage('Build Docker Image') {
             steps {
                 script {
-                    withCredentials([usernamePassword(credentialsId: 'dockerhub-credentials', usernameVariable: 'DOCKER_USER', passwordVariable: 'DOCKER_PASS')]) {
-                        bat """
-                        echo %DOCKER_PASS% | docker login -u %DOCKER_USER% --password-stdin
-                        docker build -t %DOCKER_USER%/%IMAGE_NAME%:%IMAGE_TAG% .
-                        docker push %DOCKER_USER%/%IMAGE_NAME%:%IMAGE_TAG%
-                        """
-                    }
+                    def imageTag = "build-${env.BUILD_NUMBER}"
+                    sh "docker build -t ${DOCKER_IMAGE}:${imageTag} ."
+                    sh "docker tag ${DOCKER_IMAGE}:${imageTag} ${DOCKER_IMAGE}:latest"
+                    env.IMAGE_TAG = imageTag
                 }
             }
         }
 
-        stage('Verify Docker Image') {
+        stage('Push to DockerHub') {
             steps {
-                bat """
-                docker images | findstr %DOCKERHUB_USER%/%IMAGE_NAME%
-                """
+                script {
+                    sh "echo $DOCKERHUB_CREDENTIALS_PSW | docker login -u $DOCKERHUB_CREDENTIALS_USR --password-stdin"
+                    sh "docker push ${DOCKER_IMAGE}:${IMAGE_TAG}"
+                    sh "docker push ${DOCKER_IMAGE}:latest"
+                }
             }
         }
 
         stage('Deploy to Kubernetes') {
             steps {
-                bat """
-                kubectl apply -f %DEPLOYMENT_FILE% --validate=false
-                kubectl apply -f %SERVICE_FILE% --validate=false
-                kubectl get pods -o wide
-                kubectl get svc
+                script {
+                    sh """
+                    sed 's|IMAGE_PLACEHOLDER|${DOCKER_IMAGE}:${IMAGE_TAG}|g' ${K8S_DEPLOYMENT} | kubectl apply -f -
                     """
                 }
             }
-
-        stage('Verify Deployment') {
-            steps {
-                bat """
-                echo Pods Status:
-                kubectl get pods -o wide
-                echo Services:
-                kubectl get svc
-                """
-            }
-        }
-    }
-
-    post {
-        success {
-            echo "Deployment successful!"
-        }
-        failure {
-            echo "Deployment failed. Check logs above."
         }
     }
 }

k8s/deployment.yaml

@@ -14,6 +14,6 @@ spec:
     spec:
       containers:
         - name: myapp
-          image: vipin2025devops/myapp:latest
+          image: IMAGE_PLACEHOLDER   # Jenkins will replace this
           ports:
             - containerPort: 3000