Yeah Docker’s non-native and runs under a virtualized Linux everywhere but… on Linux, so that’s a little rough. I’ve found some of the alternative VM hosts for that to be a ton faster and more power efficient, as they make better use of MacOS’ built-in virtualization system, but YMMV. I’ve also found that Apple’s lead on power management is so great that I can be using a power-sucking thing like Docker and still come out ahead, which is really lame :-/

I hear that “Docker Desktop” is especially bad on MacOS, but I’ve used docker almost as long as it’s existed and still haven’t used that (I don’t really even know what the point of it is?) so dunno about that part.