caddy filemanager forwardproxy websocket _roxy

eg.com:443 {
    proxy /hk http://localhost:1081 {
        header_upstream Connection {>Connection}
        header_upstream Upgrade {>Upgrade}
    }

    filebrowser / /mnt/filedisk {
        database          /etc/filebrowser/filebrowser.db
        auth_method       json
    }  

    forwardproxy {
        basicauth user pass
        hide_via
        upstream http://user:pass@localhost:1082
    }
}