增加dev环境配置文件

config/config.dev.js

@@ -0,0 +1,14 @@
+'use strict';
+
+const { sep } = require('path');
+
+module.exports = appInfo => {
+  const config = (exports = {});
+
+  config.cdn = {
+    repos_root_path: `${appInfo.baseDir}${sep}upload`,
+    repos_root_url: '/files',
+  };
+
+  return config;
+};