Does anyone have any experience running Jellyfin on a Synology NAS that does not have container support? The Jellyfin installation guide recommends a Docker install for Synology. I have a Synology DS418 which apparently doesn't support Docker.
You could add the Synocommunity as a package source, instructions here and then install Jellyfin from their repository in the Package Center. Jellyfin is available on their repository.
A disadvantage of this is that you're dependent on the maintainer of the package on the Synocommunity and it could take a while for new versions to be uploaded to their repository. If you use Docker, then you can basically get new versions immediately.