Bringing up a riscv64 Ubuntu VM image under `lima` on a Mac M1

[vielmetti]

Thanks for all the RISC-V bringup work, @carlosedp !

One small contribution: at https://github.com/lima-vm/lima/issues/930 I describe how to update the experimental support for a riscv64 image under lima and limactl on a Mac M1. A file in the Ubuntu distribution moved and the pointer needs to be updated.

[afbjorklund]

It would be nice to include some of the work from https://github.com/carlosedp/riscv-bringup/blob/master/build-docker-env.md or https://github.com/carlosedp/riscv-bringup/tree/master/kubernetes to add more features, to the bare-bones lima example ?

https://github.com/lima-vm/lima/blob/master/examples/experimental/riscv64.yaml

# We do not have riscv64 binaries of containerd
containerd:
  system: false
  user: false

• https://github.com/lima-vm/lima/blob/master/examples/docker-rootful.yaml

• https://github.com/lima-vm/lima/blob/master/examples/k8s.yaml