The brackets <> did not render in the docs, so let's use a variable
instead that allows for an easier copy-paste experience for users who
may set the variable to their desired bootc image.
Also add some further instructions and `sudo` to make it easier to
copy-paste.
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
It's called out that `podman-bootc` requiring podman machine on Linux
has been problematic for folks. We should also refer Linux users
to using bootc-image-builder + virt-install, so point to that doc
prominently and clarify it's Linux focused.
This basically makes podman-bootc and bib+libvirt peers.
Signed-off-by: Colin Walters <walters@verbum.org>