Custom ISO

Create a custom ISO with SSH pubkey access

Install archiso, copy the profile for the default monthly release, add ssh key to authorized_keys

sudo pacman -S archiso
cp -r /usr/share/archiso/configs/releng/ ./archlive
mkdir ./archlive/airootfs/root/.ssh
touch ./archlive/airootfs/root/.ssh/authorized_keys
cat ~/.ssh/key1.pub >> ./archlive/airootfs/root/.ssh/authorized_keys

Set permissions and ownership

archlive/profiledef.sh

file_permissions=(
  ...
  ["/root/.ssh"]="0:0:0700"
  ["/root/.ssh/authorized_keys"]="0:0:0600"
  ...
)

Build ISO

sudo mkarchiso -v ./archlive/

paru and pacman tweaks