chroot-wrapper.sh

#!/bin/sh
CHROOT="/chroots/debian-stretch"

[ `whoami` == "root" ] || (echo Must be root && exit 2)

[ -n "$(mount | grep $CHROOT/proc)" ]     || mount -t proc /proc $CHROOT/proc
[ -n "$(mount | grep $CHROOT/sys)" ]      || mount -R /sys $CHROOT/sys
[ -n "$(mount | grep $CHROOT/dev)" ]      || mount -R /dev $CHROOT/dev
[ -n "$(mount | grep $CHROOT/tmp)" ]      || mount -R /tmp $CHROOT/tmp
[ -n "$(mount | grep $CHROOT/run/udev)" ] || mount -R /run/udev $CHROOT/run/udev
[ -n "$(mount | grep $CHROOT/root)" ]     || mount -R /home/Steam $CHROOT/root
#[ -d "$CHROOT/var/run/dbus" ] ||
mount -o bind /var/run/dbus $CHROOT/run/dbus
#[ -f $CHROOT/var/run/dbus/system_bus_socket ] || chroot $CHROOT dbus-launch

COMMAND="bash -i"
case $1 in
    "X")     COMMAND="startx";;
    "con")   COMMAND="bash -i";;
    "steam") COMMAND="bash -c /usr/local/bin/bashrc.steam";;
esac

chroot $CHROOT $COMMAND

umount -l $CHROOT/run/dbus
umount -l $CHROOT/root
umount -l $CHROOT/run/udev
umount -l $CHROOT/tmp
umount -l $CHROOT/dev
umount -l $CHROOT/sys
umount -l $CHROOT/proc