Updated Jenkinsfile - 1

Jenkinsfile

 pipeline {
     agent any
-    environment {
-        KUBECONFIG = credentials('9e770a4f-d5fe-46ff-8a40-471e8132a5af')
-    }
     stages {
         stage('Checkout') {
             steps {
@@ -12,13 +9,16 @@ pipeline {
         
         stage('Deploy to Kubernetes') {
             steps {
-                sh '''
-                mkdir -p ~/.kube
-                echo $KUBECONFIG
-                cp $KUBECONFIG ~/.kube/config
-                kubectl get nodes
-                kubectl apply -f wordpress-deployment-service.yaml
-                '''
+                withCredentials([file(credentialsId:'9e770a4f-d5fe-46ff-8a40-471e8132a5af', variable: 'KUBECONFIG')]) {
+                    sh '''
+                    mkdir -p ~/.kube
+                    echo $KUBECONFIG
+                    cp $KUBECONFIG ~/.kube/config
+                    kubectl get nodes
+                    kubectl apply -f wordpress-deployment-service.yaml
+                    '''
+
+                }
             }
         }