Hey, thanks for getting this docker out there. I tried to use the builtin support (and YouTube video) without success. For those of you struggling.... I am only using one user for now, just to get it working... I installed it, didn't change any settings, and ran the command line to fix permissions. ON the mac, I didn't map any drives or connect to it in Finder. I just went into TimeMachine, it saw the advertised disk, clicked on that and away it went backing up. Super easy!!