#!/usr/bin/env bash

# Enter chroot
cryptsetup luksOpen /dev/nvme0n1p5 system
mkdir -p /mnt/root
mount /dev/mapper/system-root /mnt/root
mount /dev/mapper/system-boot /mnt/root/boot
mount /dev/mapper/system-home /mnt/root/home
mount /dev/nvme0n1p2 /mnt/root/boot/efi
mount --bind /dev /mnt/root/dev
mount --bind /run /mnt/root/run
chroot /mnt/root

# Setup once in chroot
mount --types=proc proc /proc
mount --types=sysfs sys /sys

# Do what you need
refreshgrub

# Exit and cleanup
exit
umount -R /mnt/root
vgchange -an system
cryptsetup luksClose system