Isn't this a kernel-side problem, though? The whole metaphor behind docker is "containers are super-fast and easy". And they aren't on OS X or Windows, you ha

Isn't this a kernel-side problem, though? The whole metaphor behind docker is "containers are super-fast and easy". And they aren't on OS X or Windows, you have to use a VM. And that's slower. There are tortuous and awful arguments around about whether this is inherent or not, or whether the tradeoffs are worth it or not, or where the blame lies. And I'm not interested in getting into any of that. Nonetheless the core idea behind Docker is slow on a Mac, because the Mac doesn't implement anything like the kernel feature on which it was built.