Jenkinsfile add

Jenkinsfile

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+# This is required by the Integrations "Postiz-CI/CD"
+pipeline {
+    agent any
+
+    environment {
+        NODE_VERSION = '20.17.0'
+    }
+
+    stages {
+        stage('Checkout Repository') {
+            steps {
+                checkout scm
+            }
+        }
+
+        stage('Setup Node.js') {
+            steps {
+                script {
+                    sh "curl -fsSL https://deb.nodesource.com/setup_${NODE_VERSION}.x | bash -"
+                    sh "sudo apt-get install -y nodejs"
+                }
+            }
+        }
+
+        stage('Install Dependencies') {
+            steps {
+                sh 'npm ci'
+            }
+        }
+
+        stage('Build Project') {
+            steps {
+                sh 'npm run build'
+            }
+        }
+    }
+
+    post {
+        success {
+            echo 'Build completed successfully!'
+        }
+        failure {
+            echo 'Build failed!'
+        }
+    }
+}