Instead of figuring out the date to use, specify that we want the
latest bootstrap image. Also use geo.mirror.pkgbuild.com for both
the mirror to fetch the image from and the mirror used inside the
container.

Now that archlinux-keyring depends on pacman we are not able to install
it with "pacman -U"; it needs two --nodeps options to ignore the pacman
dependency. Passing "-dd" to the pacstrap call treats it as an argument
to pacman itself.

…epro

…epro

Signed-off-by: Morten Linderud <morten@linderud.pw>