added first Jenkins ci

Jenkinsfile

@@ -0,0 +1,37 @@
+
+pipeline {
+    agent { label 'nodejs-builder' }
+
+    stages {
+        stage('Install Dependencies') {
+            steps {
+                sh 'npm ci'
+            }
+        }
+
+        stage('Test & Security Audit') {
+            echo 'Start checking security vulnerabilities in npm packages'
+            steps {
+                sh 'npm audit'
+            }
+        }
+
+        stage('Build') {
+            when {
+                branch 'development'
+            }
+            steps {
+                sh 'npm run build'
+            }
+        }
+    }
+
+    post {
+        success {
+            echo 'Pipeline erfolgreich!'
+        }
+        failure {
+            echo 'Pipeline fehlgeschlagen!'
+        }
+    }
+}