There's no OSX x86 emulation. There's Rosetta emulation and qemu emulation. Rosetta emulation is quite fast. But docker does not use it. At least for now. qe

There's no OSX x86 emulation. There's Rosetta emulation and qemu emulation. Rosetta emulation is quite fast. But docker does not use it. At least for now. qemu emulation is extraordinarily slow and basically unusable for anything but the simplest code.