Admittedly I didn't, not the least because I expect it to be at best equal in speed to my current setup, plus my current setup gives me better control on the vi

Admittedly I didn't, not the least because I expect it to be at best equal in speed to my current setup, plus my current setup gives me better control on the virtualised OS + memory ballooning of the VM (... and that there are other things with DfM that rub me the wrong way). Nonetheless, I salute the years-long effort from the Docker team on that one.