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#!/bin/sh
# Copyright (C) 2014-2021 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# SPDX-License-Identifier: GPL-3.0+
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# Description: example for automated Debian base system container image creation
# Requires: debootstrap plzip xz-utils sudo
# Usage: ./container-images.sh
set -e
ARCHITECTURES="amd64 i386"
DISTRIBUTIONS="stretch buster bullseye sid"
MIRROR="https://deb.debian.org/debian"
INCLUDE="dbus"
KEY="0x55CF1BF986ABB9C7"
COMPRESSIONS="gz lz xz"
DATE="$(date +%Y%m%d)"
for DISTRIBUTION in ${DISTRIBUTIONS}
do
for ARCHITECTURE in ${ARCHITECTURES}
do
TITLE="Debian ${DISTRIBUTION} ${DATE}/${ARCHITECTURE}"
SYSTEM="debian-${DISTRIBUTION}-${DATE}_${ARCHITECTURE}"
sudo debootstrap --arch=${ARCHITECTURE} --include=${INCLUDE} ${DISTRIBUTION} ${SYSTEM} ${MIRROR}
sudo chroot "${SYSTEM}" apt-get clean
VERSION="$(cat ${SYSTEM}/etc/debian_version)"
case "${VERSION}" in
[0-9]*)
TITLE="Debian ${VERSION} (${DISTRIBUTION}) ${DATE}/${ARCHITECTURE}"
SYSTEM="debian-${VERSION}-${DATE}_${ARCHITECTURE}"
sudo mv "debian-${DISTRIBUTION}-${DATE}_${ARCHITECTURE}" "${SYSTEM}"
;;
esac
sudo rm -f "${SYSTEM}/etc/apt/apt.conf.d/01autoremove-kernels"
sudo rm -f "${SYSTEM}/etc/hostname"
sudo rm -f "${SYSTEM}/etc/machine-id"
sudo rm -f "${SYSTEM}/etc/resolv.conf"
sudo rm -f "${SYSTEM}/var/lib/systemd/catalog/database"
for COMPRESSION in ${COMPRESSIONS}
do
case "${COMPRESSION}" in
gz)
TAR_OPTIONS="--gzip"
;;
lz)
TAR_OPTIONS="--lzip"
;;
xz)
TAR_OPTIONS="--xz"
;;
esac
echo "Creating ${SYSTEM}.system.tar.${COMPRESSION}"
sudo tar ${TAR_OPTIONS} -cf "${SYSTEM}.system.tar.${COMPRESSION}" "${SYSTEM}"
echo "Creating ${SYSTEM}.system.tar.${COMPRESSION}.sha512"
sha512sum "${SYSTEM}.system.tar.${COMPRESSION}" > "${SYSTEM}.system.tar.${COMPRESSION}.sha512"
if [ -n "${KEY}" ]
then
echo "Creating ${SYSTEM}.system.tar.${COMPRESSION}.sign"
gpg -a -b --default-key ${KEY} ${SYSTEM}.system.tar.${COMPRESSION}
mv "${SYSTEM}.system.tar.${COMPRESSION}.asc" "${SYSTEM}.system.tar.${COMPRESSION}.sign"
fi
echo "Creating ${SYSTEM}.system.tar.${COMPRESSION} symlink"
ln -sf "${SYSTEM}.system.tar.${COMPRESSION}" "$(echo ${SYSTEM}.system.tar.${COMPRESSION} | sed -e "s|${DATE}|current|")"
echo "Creating ${SYSTEM}.system.tar.${COMPRESSION}.sha512 copy"
sed -e "s|${DATE}|current|" "${SYSTEM}.system.tar.${COMPRESSION}.sha512" > "$(echo ${SYSTEM}.system.tar.${COMPRESSION}.sha512 | sed -e "s|${DATE}|current|")"
if [ -e "${SYSTEM}.system.tar.${COMPRESSION}.sign" ]
then
echo "Creating ${SYSTEM}.system.tar.${COMPRESSION}.sign copy"
cp "${SYSTEM}.system.tar.${COMPRESSION}.sign" "$(echo ${SYSTEM}.system.tar.${COMPRESSION}.sign | sed -e "s|${DATE}|current|")"
fi
done
sudo rm -rf "${SYSTEM}"
cat >> container-list.txt << EOF
${SYSTEM}.system.tar | ${TITLE}
EOF
done
done
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