You should be able to run it in the new officially supported Docker image that Roon will provide:
See:
https://www.qnap.com/en/software/container-station
(Apparently, QNAP hasn’t updated their major glibc version in 10 years, which is why it is so low in QTS 5.x. Looks like they are working on a QTS 6 with unknown release date, but anyway Docker comes to the rescue)