[throwawayacc4]

Containers run nearly identical to native performance and best VMs in practically every category.

In what way are they slow?

[baby]

On my mac it’s really slow to use docker. Maybe I should increase the ram it uses

[umanwizard]

Docker containers run in a VM on Mac.

[throwawayacc4]

I don't use Apple products so I can't help you there. I assume it's doing some networking madness to expose a Linux VM through a bridge or something similar.