adding credentials

Jenkinsfile

@@ -5,12 +5,22 @@ pipeline {
         REGISTRY_URL = 'git.winteraccess.id'
         IMAGE_NAME = 'winter-access/backend_nam'
         KUBE_NAMESPACE = 'nam-backend-dev'
+        GIT_CREDENTIALS_ID = '8242519c-ed9e-447a-ad63-1f8d7368cf68'
     }
 
     stages {
         stage('Checkout') {
             steps {
-                git branch: 'dev', url: 'https://git.winteraccess.id/winter-access/backend_nam.git'
+                checkout([
+                    $class: 'GitSCM',
+                    branches: [[name: '*/dev']],
+                    doGenerateSubmoduleConfigurations: false,
+                    extensions: [],
+                    userRemoteConfigs: [[
+                        url: 'https://git.winteraccess.id/winter-access/backend_nam.git',
+                        credentialsId: env.GIT_CREDENTIALS_ID
+                    ]]
+                ])
             }
         }