If you want to run an up-to-date version of Docker, look into https://github.com/telnetdoogie/synology-docker/. It is a script that will back up the existing docker binaries and replace them with the latest. (Note the "First Time" upgrade information of switching to the "local" logger from "db").
I have forgotten why I originally wanted to update but I have had no issues with the updated system.
I have forgotten why I originally wanted to update but I have had no issues with the updated system.