Critical infrastructure.

Compiles to 384 byte statically-linked arm64 linux binary and a ~4k container image.

Build, run, and view binary size on an arm64 linux system:

> make
...
> ./hi
alonzo sucks!
> wc -c ./hi
384 ./hi
>

Build container image, then check image size:

> podman build -t hi:latest .
...
> podman images --format '{{.Size}}' hi
3.83 kB
>