diff --git a/Jenkinsfile b/Jenkinsfile
index 4ccfaf3..1df0576 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,14 +1,7 @@
-def KUBERNETES_NAME = "kubernetes"
-def DOCKER_REPOSITORY_CREDENTIAL_ID = "ea3d4aae-783b-460f-9cd0-931c53c021db"
-def HARBOR_HOST = "http://192.168.75.149:30002"
-def NAMESPACE_NAME = "library"
-def REPOSITORY_NAME = "my-web-app"
-def TAG = "v1.0"
-
 pipeline {
     agent {
         kubernetes {
-            cloud "${KUBERNETES_NAME}"
+            cloud "${env.KUBERNETES_NAME}"
             yaml """
 apiVersion: v1
 kind: Pod
@@ -40,15 +33,23 @@ spec:
 """
         }
     }
+    environment {
+        KUBERNETES_NAME = "kubernetes"
+        DOCKER_REPOSITORY_CREDENTIAL_ID = "ea3d4aae-783b-460f-9cd0-931c53c021db"
+        HARBOR_HOST = "http://192.168.75.149:30002"
+        NAMESPACE_NAME = "library"
+        REPOSITORY_NAME = "my-web-app"
+        TAG = "v1.0"
+    }
     stages {
         stage('构建镜像') {
             steps {
-                withCredentials([usernamePassword(credentialsId: '${DOCKER_REPOSITORY_CREDENTIAL_ID}', passwordVariable: 'PASSWORD', usernameVariable: 'USERNAME')]) {
+                withCredentials([usernamePassword(credentialsId: env.DOCKER_REPOSITORY_CREDENTIAL_ID, passwordVariable: 'PASSWORD', usernameVariable: 'USERNAME')]) {
                     container('docker') {
                         sh """
-                        docker build -t ${HARBOR_HOST}/${NAMESPACE_NAME}/${REPOSITORY_NAME}:${TAG} .
-                        docker login ${HARBOR_HOST} --username ${USERNAME} --password ${PASSWORD}
-                        docker push ${HARBOR_HOST}/${NAMESPACE_NAME}/${REPOSITORY_NAME}:${TAG}
+                        docker build -t ${env.HARBOR_HOST}/${env.NAMESPACE_NAME}/${env.REPOSITORY_NAME}:${env.TAG} .
+                        docker login ${env.HARBOR_HOST} --username ${env.USERNAME} --password ${env.PASSWORD}
+                        docker push ${env.HARBOR_HOST}/${env.NAMESPACE_NAME}/${env.REPOSITORY_NAME}:${env.TAG}
                         """
                     }
                 }