The best source is https://plex.tv/downloads
Synology always lags very far behind. — true.
Docker lags behind the official package but is the same code (binary).
You will want the x86_64 package for DSM 6 (until you upgrade to DSM 7)
What you gain by using the official package is that I handle all the hardware for you automatically at installation time. Every update checks and makes any corrections/changes needed.
The only thing you need to do is grant user Plex permission to read the media.
The transcoder temp directory is stored, by default, in the Plex share (which I control and contains all your metadata)
I think you’ll find it a lot easier than fighting with Docker , which isn’t for the faint of heart.
I think you’ll find this informative about best practices for using Plex on Synology units.
