Dyad/configs/init-overlay

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#!/bin/sh
mkdir /run/overlay
# Set up the overlay filesystem
mount -t tmpfs tmpfs /run/overlay
mkdir -p /run/overlay/upper
mkdir -p /run/overlay/work
mkdir -p /run/overlay/root
mount -t overlay overlay -o lowerdir=/,upperdir=/run/overlay/upper,workdir=/run/overlay/work /run/overlay/root
# Pivot the root filesystem to the overlay filesystem
pivot_root /run/overlay/root /run/overlay/root/mnt
# Move the original mount points to their new locations
for i in dev proc sys run; do
mount --move /mnt/$i /$i
done
# Clean up and switch to the new init
umount /mnt
exec chroot . /sbin/init <dev/console >dev/console 2>&1