adding credentials

Jenkinsfile

@@ -1,10 +1,23 @@
 pipeline {
     agent any
 
+    environment {
+        GIT_CREDENTIALS = '560c52f4-4213-4fb3-a757-620b6d3f119c' // This should be the ID of your Jenkins credentials
+    }
+
     stages {
         stage('Checkout') {
             steps {
-                git branch: 'main', url: 'https://git.winteraccess.id/winter-access/backend_nam.git'
+                checkout([
+                    $class: 'GitSCM',
+                    branches: [[name: '*/main']],
+                    doGenerateSubmoduleConfigurations: false,
+                    extensions: [],
+                    userRemoteConfigs: [[
+                        url: 'https://git.winteraccess.id/winter-access/backend_nam.git',
+                        credentialsId: env.GIT_CREDENTIALS
+                    ]]
+                ])
             }
         }
 
@@ -17,7 +30,6 @@ pipeline {
             }
         }
 
-
         stage('Restart Service') {
             steps {
                 // Add your deployment steps here