Setup Raspberry Pi chroot for cross compilation

#!/bin/bash

# https://gauvain.pocentek.net/docs/raspbian-chroot/

apt install schroot

echo \
[jessie] \
description=Raspbian armhf \
directory=/var/chroot \
users=$USER \
groups=sbuild \
root-groups=root >> /etc/schroot/schroot.conf

apt install qemu-user-static debootstrap
CHROOT=/var/chroot
debootstrap --no-check-gpg --foreign --arch=armhf jessie $CHROOT http://archive.raspbian.org/raspbian
cp /usr/bin/qemu-arm-static $CHROOT/usr/bin
chroot $CHROOT /debootstrap/debootstrap --second-stage
cat > $CHROOT/etc/apt/sources.list << EOF
deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi
deb http://archive.raspberrypi.org/debian/ jessie main
EOF
chroot $CHROOT apt-key adv --keyserver keyserver.ubuntu.com --recv 82B129927FA3303E
chroot $CHROOT apt-get update