In Server::Starter 0.13, --dir option was added to start_server. start_server will do chdir to a specified directory before exec(2). It's useful when you use carton, proclet and deploy tool like capistrano that does rsync all project files and symlink to a newest directroy. https://metacpan.org/release/Server-Starter Server::Starter 0.13で start_server に --dir オプションが追加されました。exec前に指定したディレクトリにchdirしま