Currently I'm nesting docker in an LXC. I also believe that the LXC updater would take care of the breaking changes that happen with the complex docker compose changes (hasn't in several releases but it happens)

This looks great! Is there an easy way to migrate from a docker setup to this lxc?

I've had a lot of success with the Run With Hal app. Even before they came out with the app I would use Hal Higdon training programs.