Update

Dockerfile

@@ -1,16 +1,18 @@
-FROM node:6.10.3
+FROM node:18-alpine
 
-# Create app directory
-RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
-# Install app dependencies
-COPY package.json /usr/src/app/
+# Copy package.json and package-lock.json first for caching
+COPY package*.json ./
+
+# Install dependencies (including dev if you need nodemon in container)
 RUN npm install
 
-# Bundle app source
-COPY . /usr/src/app
+# Copy application source code
+COPY . .
 
+# Expose the application port
 EXPOSE 9000
-CMD [ "npm", "start" ]
-#helo
+
+# Start the app
+CMD ["npm", "start"]

README.md

@@ -2,3 +2,4 @@
 
 
 hello
+      Jenkins 

docker-compose.yml

@@ -0,0 +1,14 @@
+version: '3.8'
+
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: sample-node-app:latest
+    container_name: sample-node-app
+    ports:
+      - "9000:9000"
+    env_file:
+      - .env
+    restart: unless-stopped

index.js

@@ -1,9 +1,15 @@
 const express = require('express');
+require('dotenv').config(); // 👈 Load env variables
+
 const app = express();
-const port = 9000;
+const port = process.env.PORT || 9000;
+const message = process.env.CUSTOM_MESSAGE || 'Hello World!';
+
 app.get('/', (req, res) => {
-    res.send('<h1>Hello World from Docker and Node.js!</h1>');
+    res.send(`<h1>${message}</h1>`);
 });
-app.listen(port, () => {
-    console.log(`Listening on port ${port}`);
+
+app.listen(port, '0.0.0.0', () => {
+    console.log(`🚀 Server running on port ${port}`);
 });
+

jenkins

@@ -0,0 +1,117 @@
+pipeline {
+    agent none
+
+    environment {
+        AWS_ACCOUNT_ID     = '951042686423'
+        AWS_REGION         = 'ap-south-1'
+        REPO_NAME          = 'sample-node-app'
+        IMAGE_TAG          = 'latest'
+        ECR_REGISTRY       = "${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com"
+        IMAGE_URI          = "${ECR_REGISTRY}/${REPO_NAME}:${IMAGE_TAG}"
+        GIT_REPO           = 'https://github.com/MANIKANDAN242221/sample-node-app.git'
+        AWS_CREDENTIALS_ID = 'aws-jenkins-creds'
+    }
+
+    stages {
+        stage('Clone Repository') {
+            agent { label 'master' }
+            steps {
+                git url: "${GIT_REPO}", branch: 'main'
+            }
+        }
+
+        stage('Ensure .env File') {
+            agent { label 'master' }
+            steps {
+                sh '''
+                    echo "PORT=9000" > .env
+                    echo "NODE_ENV=production" >> .env
+                    echo "CUSTOM_MESSAGE=Hello from Jenkins pipeline" >> .env
+                '''
+            }
+        }
+
+        stage('Install Dependencies & Build UI') {
+            agent { label 'master' }
+            steps {
+                sh '''
+                    echo "📦 Installing Node.js dependencies..."
+                    npm install
+
+                    echo "🏗️ Building frontend..."
+                    npm run build
+                '''
+            }
+        }
+
+        stage('Build Docker Image') {
+            agent { label 'master' }
+            steps {
+                sh '''
+                    echo "🗑️ Removing old Docker image..."
+                    docker rmi -f ${REPO_NAME}:latest || true
+
+                    echo "🐳 Building new Docker image..."
+                    docker-compose build --no-cache
+                '''
+            }
+        }
+
+        stage('Tag Image for ECR') {
+            agent { label 'master' }
+            steps {
+                sh "docker tag ${REPO_NAME}:latest ${IMAGE_URI}"
+            }
+        }
+
+        stage('Login to ECR') {
+            agent { label 'master' }
+            steps {
+                withCredentials([
+                    usernamePassword(
+                        credentialsId: "${AWS_CREDENTIALS_ID}",
+                        usernameVariable: 'AWS_ACCESS_KEY_ID',
+                        passwordVariable: 'AWS_SECRET_ACCESS_KEY'
+                    )
+                ]) {
+                    sh '''
+                        aws configure set aws_access_key_id $AWS_ACCESS_KEY_ID
+                        aws configure set aws_secret_access_key $AWS_SECRET_ACCESS_KEY
+                        aws configure set default.region ${AWS_REGION}
+                        aws ecr get-login-password --region ${AWS_REGION} \
+                        | docker login --username AWS --password-stdin ${ECR_REGISTRY}
+                    '''
+                }
+            }
+        }
+
+        stage('Push Image to ECR') {
+            agent { label 'master' }
+            steps {
+                sh "docker push ${IMAGE_URI}"
+            }
+        }
+
+        stage('Deploy Container on Agent') {
+            agent { label 'agent' }
+            steps {
+                sh '''
+                    docker-compose down || true
+                    docker-compose up -d
+                '''
+            }
+        }
+    }
+
+    post {
+        always {
+            echo '🧹 Cleaning up...'
+        }
+        success {
+            echo '✅ Pipeline executed successfully!'
+        }
+        failure {
+            echo '❌ Pipeline failed!'
+        }
+    }
+}

node-app/deployment.yaml

@@ -14,7 +14,7 @@ spec:
     spec:
       containers:
       - name: node-app
-        image: arunmagi/node-app
+        image: techdocker24/node-app
         ports:
         - containerPort: 9000
 ---

package.json

@@ -1,12 +1,20 @@
 {
   "name": "docker-node-example",
   "version": "1.0.0",
+  "description": "Sample Node.js Express app for Docker & Jenkins",
   "main": "index.js",
   "scripts": {
-    "start": "nodemon index.js"
+    "start": "node index.js",
+    "dev": "nodemon index.js",
+    "build": "echo 'No build step needed for backend API'"
   },
   "dependencies": {
-    "express": "^4.15.3",
-    "nodemon": "^1.11.0"
-  }
+    "express": "^4.18.2",
+    "dotenv": "^16.0.0"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.2"
+  },
+  "author": "",
+  "license": "ISC"
 }