%post --log=/mnt/sysimage/root/post.log # Beginning of the post-installation section. Log all messages to a given file

localectl set-keymap ch-fr # Set keymap to `ch-fr`. Alternatively, `us` can be picked.
dnf update -y # Update the system 
grub2-mkconfig -o /boot/grub2/grub.cfg # Unsure it is actually useful

%end # End of the %post section