vinaigrette/chroots/make-chroots

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#!/bin/bash
# For some reason, building chroots for buster from stretch requires libdebian-installer4 0.119 instead of 0.110, c.f. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=904699 ... installed it by manually downloading and dpkg -i the .deb
readonly DISTRIB=buster
readonly INIT_DIR=$PWD
readonly ARCHS="amd64"
#readonly ARCHS="i386 armhf armel arm64"
#readonly ARCHS="arm64"
function main()
{
for ARCH in $ARCHS
do
build_chroot $ARCH
done
}
function build_chroot()
{
local ARCH=$1
local CHROOT=chroot-${DISTRIB}-${ARCH}
echo ""
echo "Starting build for $ARCH"
echo ""
cd /tmp/
cdebootstrap --arch=${ARCH} --foreign ${DISTRIB} ./$CHROOT http://deb.debian.org/debian/
cp /usr/bin/qemu-arm-static $CHROOT/usr/bin/
cp /usr/bin/qemu-aarch64-static $CHROOT/usr/bin/
cp /etc/resolv.conf $CHROOT/etc/resolv.conf
chroot $CHROOT apt update
chroot $CHROOT apt dist-upgrade
chroot $CHROOT apt install -y build-essential debhelper cmake wget devscripts git
if [ "$ARCH" == "amd64" ];
then
# This is for building yunohost-admin
chroot $CHROOT apt install npm nodejs
fi
chroot $CHROOT apt clean
cd $CHROOT
echo "Now creating tarball with the filesystem ..."
tar -czf $INIT_DIR/${DISTRIB}-${ARCH}.tgz ./*
echo ""
echo "Output chroot archive should be available as $INIT_DIR/${DISTRIB}-${ARCH}.tgz"
echo ""
}
main