Switch from sudo to doas
Per alpine/tsc#1, Alpine 3.15 will very likely move
sudo from the main repo to community, and switching to
doas as its preferred privilege escalation utility.
This shouldn't be hard to do...
a new profiles/base/3 that installs
sudothat edge and 3.15 versions pull in
update /etc/doas.conf to allow passwordless
doasfor group wheel (similar to what we do for /etc/sudoers)