新增jenkins构建脚本

jenkins-prod.sh

@@ -5,6 +5,7 @@ yarn
 npm run build:prod
 
 rm -rf ~/project/examcloud/static/student-client/dist/*
+mkdir -p ~/project/examcloud/static/student-client
 cp -r  dist ~/project/examcloud/static/student-client/
 
 rm -rf ~/packages/static/student-client/*