fixed-bug

@@ -101,7 +101,7 @@ const file =  {
             return ctx.body = {
                 code: 400,
                 message: '请指定路径'
-            }; 
+            };
         }
 
         await new FileApi().upload(file, actPath, user);
@@ -139,7 +139,7 @@ const file =  {
         }
 
         let readable = fs.createReadStream(file.path);
-        let config = CDNCONFIG.main;
+        let config = _.cloneDeep(CDNCONFIG.main);
 
         if (cover) {
             _.assign(config, {