Jenkins login fix

Jenkinsfile

@@ -25,13 +25,17 @@ pipeline {
         }
         stage('Commit & Push') {
             steps {
-                script {
+                withCredentials([usernamePassword(
+                    credentialsId: env.GIT_CREDENTIALS, 
+                    usernameVariable: 'GIT_USER', 
+                    passwordVariable: 'GIT_PASS'
+                )]) {
                     sh '''
                         git config user.name "jenkins"
                         git config user.email "jenkins@example.com"
                         git add test.txt
-                        git commit -m "Update test.txt from Jenkins"
-                        git push origin main
+                        git commit -m "Update test.txt from Jenkins" || echo "No changes to commit"
+                        git push https://$GIT_USER:$GIT_PASS@git.karel.one/karel/test.git main
                     '''
                 }
             }