Fix Jenkinsfile with memory options and stable deploy

Jenkinsfile

@@ -1,10 +1,16 @@
 pipeline {
   agent any
-  tools { nodejs 'Node' }   // make sure in Jenkins -> Global Tool Config -> NodeJS is named "Node"
-  environment {
-    WEB_IP = '13.49.223.142'     // your EC2 web server IP
-    SSH_CRED = 'deploy-ec2-key'  // Jenkins credential ID for SSH key
+
+  tools { 
+    nodejs 'Node'   // Jenkins -> Global Tool Config -> NodeJS must be named "Node"
   }
+
+  environment {
+    WEB_IP = '13.49.223.142'     // update if EC2 IP changes
+    SSH_CRED = 'deploy-ec2-key'  // Jenkins credential ID for your EC2 SSH key
+    NODE_OPTIONS = "--max_old_space_size=512"  // prevent Node from eating all memory
+  }
+
   stages {
     stage('Checkout') { 
       steps { 
@@ -14,13 +20,19 @@ pipeline {
 
     stage('Install') { 
       steps { 
-        sh 'npm install'   // 
+        sh '''
+          echo "📦 Installing dependencies..."
+          npm install
+        '''
       } 
     }
 
     stage('Build') { 
       steps { 
-        sh 'npm run build' 
+        sh '''
+          echo "🏗️  Building project..."
+          npm run build
+        '''
       } 
     }
 
@@ -29,11 +41,14 @@ pipeline {
         sh '''
           OUT_DIR="build"
           [ -d dist ] && OUT_DIR="dist"
+
           if [ ! -d "$OUT_DIR" ]; then
-            echo "ERROR: No build output found (build/ or dist/)"
+            echo "❌ ERROR: No build output found (build/ or dist/)"
             ls -la
             exit 1
           fi
+
+          echo "📦 Packaging build output..."
           tar -czf build.tar.gz -C "$OUT_DIR" .
         '''
         archiveArtifacts artifacts: 'build.tar.gz'
@@ -44,13 +59,17 @@ pipeline {
       steps {
         sshagent(credentials: [env.SSH_CRED]) {
           sh '''
+            echo "🚀 Deploying to ${WEB_IP} ..."
             scp -o StrictHostKeyChecking=no build.tar.gz deploy@${WEB_IP}:/tmp/build.tar.gz
+
             ssh -o StrictHostKeyChecking=no deploy@${WEB_IP} '
               sudo rm -rf /var/www/reactapp/*;
               sudo mkdir -p /var/www/reactapp;
               sudo tar -xzf /tmp/build.tar.gz -C /var/www/reactapp;
               sudo systemctl reload nginx
             '
+
+            echo "✅ Deployment finished"
           '''
         }
       }
@@ -58,7 +77,7 @@ pipeline {
   }
 
   post {
-    success { echo "✅ Deployed successfully" }
-    failure { echo "❌ Failed — check console" }
+    success { echo "✅ Pipeline completed successfully" }
+    failure { echo "❌ Pipeline failed — check console log" }
   }
 }