Update Jenkinsfile

Jenkinsfile

@@ -1,5 +1,11 @@
 pipeline {
   agent any
+
+  environment {
+    APP_PORT = 6767
+    PID_FILE = "${WORKSPACE}/app.pid"
+  }
+  
   stages {
     stage('Echo Version') {
       steps {
@@ -24,7 +30,59 @@ pipeline {
         junit(testResults: 'target/surefire-reports/TEST-*.xml', keepProperties: true, keepTestNames: true)
       }
     }
+    stage('Start App') {
+      steps {
+        sh '''
+          set -e
 
+          if [ -f "$PID_FILE" ]; then
+            kill "$(cat "$PID_FILE")" || true
+            rm -f "$PID_FILE"
+          fi
+
+          echo "Starting JAR..."
+          nohup java -jar target/hello-demo-*.jar \
+            > app.log 2>&1 &
+
+          echo $! > "$PID_FILE"
+          echo "App started (PID: $(cat "$PID_FILE"))"
+        '''
+      }
+    }
+
+    stage('Integration Test') {
+      steps {
+        sh '''
+          set -e
+
+          echo "Waiting for app..."
+          for i in {1..15}; do
+            if curl -fs http://localhost:$APP_PORT/hello >/dev/null; then
+              echo "Integration test passed"
+              curl -s http://localhost:$APP_PORT/hello
+              exit 0
+            fi
+            sleep 1
+          done
+
+          echo "Integration test failed"
+          cat app.log || true
+          exit 1
+        '''
+      }
+    }
+  }
+
+  post {
+    always {
+      sh '''
+        if [ -f "$PID_FILE" ]; then
+          echo "Stopping application"
+          kill "$(cat "$PID_FILE")" || true
+          rm -f "$PID_FILE"
+        fi
+      '''
+    }
   }
   tools {
     maven 'M398'