Still miss native package of BubbleUPnP Server for Synology DSM 7 a lot.
I understand but still not happy with Synology breaking packages from DSM6 to DSM7 for no good reason except that they could.
Also not too fond of manufacturer specific packages these days, as it is a huge time sink (let alone that for Syno, you need a Syno NAS!) and Docker images are the way to go. Docker is usually supported on Intel and easy. Maybe less so on ARM although there are usually a solution to run it on various NAS but it can be rather technical.