You're running buildah itself natively, but the "arch" binary in the base image that's being invoked for that RUN instruction is compiled for arm64, and that means you need the help of an emulator to execute it.
Yeah, I understand that so far. The `arch` binary in the container image is not my native architecture, so it needs emulation. But *where* do I insert that emulator? And how? I can't just run `buildah` with `qemu-aarch64-static`, because `buildah` is for my native architecture. I also can't add `qemu-aarch64-static` in the Dockerfile, that'd be pointless (and also wouldn't work, because it'd look for the binary inside the container image). Looking at https://github.com/containers/buildah/issues/1590#issuecomment-771924743 for example, I don't see any manual step for invoking an emulator, leading me to believe that this is something buildah takes care of for me, assuming that `qemu-user-static` is installed (which it is, ftr). Any more hints? -- JC