Update .rancher-pipeline.yml file

.rancher-pipeline.yml

@@ -2,7 +2,7 @@ stages:
 - name: compile
   steps:
   - runScriptConfig:
-      image: gradle
+      image: r6eve/gradle:5.2.1-jdk8-alpine
       shellScript: cd tve-member-user & gradle clean build
 timeout: 60
 notification: {}