Fix Gist upload and other web operation may fail to post data

Remove unused files in Docker images.
Cleanup codes.

src/script/script_quickjs.cpp

@@ -370,7 +370,7 @@ static qjs_fetch_Response qjs_fetch(qjs_fetch_Request request)
     }
 
     std::string response_headers;
-    FetchArgument argument {method, request.url, request.proxy, request.postdata, &request.headers.headers, &request.cookies, 0};
+    FetchArgument argument {method, request.url, request.proxy, &request.postdata, &request.headers.headers, &request.cookies, 0};
     FetchResult result {&response.status_code, &response.content, &response_headers, &response.cookies};
 
     webGet(argument, result);