Add lxc-devuan template

1 files changed, 834 insertions, 0 deletions

diff --git a/lxc-devuan b/lxc-devuan
new file mode 100755
index 0000000..7951984
--- /dev/null
+++ b/lxc-devuan
@@ -0,0 +1,834 @@
+#!/bin/bash
+
+#
+# lxc: linux Container library
+
+# Authors:
+# Daniel Lezcano <daniel.lezcano@free.fr>
+
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# This library 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
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+# Detect use under userns (unsupported)
+for arg in "$@"; do
+    [ "$arg" = "--" ] && break
+    if [ "$arg" = "--mapped-uid" -o "$arg" = "--mapped-gid" ]; then
+        echo "This template can't be used for unprivileged containers." 1>&2
+        echo "You may want to try the \"download\" template instead." 1>&2
+        exit 1
+    fi
+done
+
+# Make sure the usual locations are in PATH
+export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin
+export GREP_OPTIONS=""
+
+MIRROR=${MIRROR:-http://pkgmaster.devuan.org/merged}
+SECURITY_MIRROR=${SECURITY_MIRROR:-http://pkgmaster.devuan.org/merged}
+LOCALSTATEDIR="/var"
+LXC_TEMPLATE_CONFIG="/usr/share/lxc/config"
+# Allows the lxc-cache directory to be set by environment variable
+LXC_CACHE_PATH=${LXC_CACHE_PATH:-"$LOCALSTATEDIR/cache/lxc"}
+
+find_interpreter()
+{
+    given_interpreter=$(basename "$1")
+
+    if [ ! -d /proc/sys/fs/binfmt_misc/ ] ; then
+        return 1
+    fi
+    for file in /proc/sys/fs/binfmt_misc/* ; do
+        if [ "$file" = "/proc/sys/fs/binfmt_misc/register" -o \
+             "$file" = "/proc/sys/fs/binfmt_misc/status" ] ; then
+            continue
+        fi
+        interpreter_path=$(sed -n "/^interpreter/s/interpreter \([^[:space:]]*\)/\1/p" "$file")
+        interpreter=$(basename "$interpreter_path")
+
+        if [ "$given_interpreter" = "$interpreter" ] ; then
+            echo "$interpreter_path"
+            return 0
+        fi
+    done
+    return 1
+}
+
+configure_devuan()
+{
+    rootfs=$1
+    hostname=$2
+    num_tty=$3
+
+    # squeeze only has /dev/tty and /dev/tty0 by default,
+    # therefore creating missing device nodes for tty1-4.
+    for tty in $(seq 1 "$num_tty"); do
+        if [ ! -e "$rootfs/dev/tty$tty" ]; then
+            mknod "$rootfs/dev/tty$tty" c 4 "$tty"
+        fi
+    done
+
+    # configure the inittab
+    cat <<EOF > $rootfs/etc/inittab
+id:3:initdefault:
+si::sysinit:/etc/init.d/rcS
+l0:0:wait:/etc/init.d/rc 0
+l1:1:wait:/etc/init.d/rc 1
+l2:2:wait:/etc/init.d/rc 2
+l3:3:wait:/etc/init.d/rc 3
+l4:4:wait:/etc/init.d/rc 4
+l5:5:wait:/etc/init.d/rc 5
+l6:6:wait:/etc/init.d/rc 6
+# Normally not reached, but fallthrough in case of emergency.
+z6:6:respawn:/sbin/sulogin
+1:2345:respawn:/sbin/getty 38400 console
+$(for tty in $(seq 1 "$num_tty"); do echo "c${tty}:12345:respawn:/sbin/getty 38400 tty${tty} linux" ; done;)
+p6::ctrlaltdel:/sbin/init 6
+p0::powerfail:/sbin/init 0
+EOF
+
+    # symlink mtab
+    [ -e "$rootfs/etc/mtab" ] && rm "$rootfs/etc/mtab"
+    ln -s /proc/self/mounts "$rootfs/etc/mtab"
+
+    # disable selinux in devuan
+    mkdir -p "$rootfs/selinux"
+    echo 0 > "$rootfs/selinux/enforce"
+
+    # configure the network using the dhcp
+    cat <<EOF > $rootfs/etc/network/interfaces
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+EOF
+
+    # set the hostname
+    cat <<EOF > $rootfs/etc/hostname
+$hostname
+EOF
+	# set minimal hosts
+	cat <<EOF > $rootfs/etc/hosts
+127.0.0.1   localhost
+127.0.1.1   $hostname
+
+# The following lines are desirable for IPv6 capable hosts
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts
+EOF
+
+    # reconfigure some services
+
+    # but first reconfigure locales - so we get no noisy perl-warnings
+    if [ -z "$LANG" ] || echo $LANG | grep -E -q "^C(\..+)*$"; then
+        cat >> "$rootfs/etc/locale.gen" << EOF
+en_US.UTF-8 UTF-8
+EOF
+        chroot "$rootfs" locale-gen en_US.UTF-8 UTF-8
+        chroot "$rootfs" update-locale LANG=en_US.UTF-8
+    else
+        encoding=$(locale charmap)
+        [ -z "${encoding}" ] && encoding="UTF-8"
+        chroot "$rootfs" sed -e "s/^# \(${LANG} ${encoding}\)/\1/" \
+            -i /etc/locale.gen 2> /dev/null
+        cat >> "$rootfs/etc/locale.gen" << EOF
+$LANG $encoding
+EOF
+        chroot "$rootfs" locale-gen "$LANG" "$encoding"
+        chroot "$rootfs" update-locale LANG="$LANG"
+    fi
+
+    # remove pointless services in a container
+    chroot "$rootfs" /usr/sbin/update-rc.d -f checkroot.sh disable
+    chroot "$rootfs" /usr/sbin/update-rc.d -f umountfs disable
+    chroot "$rootfs" /usr/sbin/update-rc.d -f hwclock.sh disable
+    chroot "$rootfs" /usr/sbin/update-rc.d -f hwclockfirst.sh disable
+
+    # generate new SSH keys
+    if [ -x "$rootfs/var/lib/dpkg/info/openssh-server.postinst" ]; then
+        cat > "$rootfs/usr/sbin/policy-rc.d" << EOF
+#!/bin/sh
+exit 101
+EOF
+        chmod +x "$rootfs/usr/sbin/policy-rc.d"
+
+        if [ -f "$rootfs/etc/init/ssh.conf" ]; then
+            mv "$rootfs/etc/init/ssh.conf" "$rootfs/etc/init/ssh.conf.disabled"
+        fi
+
+        rm -f "$rootfs/etc/ssh/"ssh_host_*key*
+
+        DPKG_MAINTSCRIPT_PACKAGE=openssh DPKG_MAINTSCRIPT_NAME=postinst chroot "$rootfs" /var/lib/dpkg/info/openssh-server.postinst configure
+        sed -i "s/root@$(hostname)/root@$hostname/g" "$rootfs/etc/ssh/"ssh_host_*.pub
+
+        if [ -f "$rootfs/etc/init/ssh.conf.disabled" ]; then
+            mv "$rootfs/etc/init/ssh.conf.disabled" "$rootfs/etc/init/ssh.conf"
+        fi
+
+        rm -f "$rootfs/usr/sbin/policy-rc.d"
+    fi
+
+    # set initial timezone as on host
+    if [ -f /etc/timezone ]; then
+        cat /etc/timezone > "$rootfs/etc/timezone"
+        chroot "$rootfs" dpkg-reconfigure -f noninteractive tzdata
+    elif [ -f /etc/sysconfig/clock ]; then
+        . /etc/sysconfig/clock
+        echo "$ZONE" > "$rootfs/etc/timezone"
+        chroot "$rootfs" dpkg-reconfigure -f noninteractive tzdata
+    else
+        echo "Timezone in container is not configured. Adjust it manually."
+    fi
+
+    if [ -n "$authkey" ]; then
+        local ssh_dir_path="${rootfs}/root/.ssh"
+        mkdir -p "$ssh_dir_path"
+        cp "$authkey" "${ssh_dir_path}/authorized_keys"
+        chmod 700 "$ssh_dir_path"
+        echo "Inserted SSH public key from '$authkey' into /root/.ssh/authorized_keys"
+    fi
+
+    return 0
+}
+
+write_sourceslist()
+{
+    local rootfs="$1";  shift
+    local release="$1"; shift
+    local arch="$1";    shift
+
+    local prefix="deb"
+    if [ -n "${arch}" ]; then
+        prefix="deb [arch=${arch}]"
+    fi
+
+    if [ "$mainonly" = 1 ]; then
+      non_main=''
+    else
+      non_main=' contrib non-free'
+    fi
+
+    cat >> "${rootfs}/etc/apt/sources.list" << EOF
+${prefix} $MIRROR          ${release}         main${non_main}
+EOF
+
+    if [ "$release" != "unstable" -a "$release" != "sid" ]; then
+      cat >> "${rootfs}/etc/apt/sources.list" << EOF
+${prefix} $SECURITY_MIRROR ${release}/updates main${non_main}
+EOF
+    fi
+}
+
+install_packages()
+{
+    local rootfs="$1"; shift
+    local packages="$*"
+
+    chroot "${rootfs}" apt-get update
+    if [ -n "${packages}" ]; then
+        chroot "${rootfs}" apt-get install --force-yes -y --no-install-recommends ${packages}
+    fi
+}
+
+#configure_debian_systemd()
+#{
+#    path=$1
+#    rootfs=$2
+#    config=$3
+#    num_tty=$4
+#
+#    # just in case systemd is not installed
+#    mkdir -p "${rootfs}/lib/systemd/system"
+#    mkdir -p "${rootfs}/etc/systemd/system/getty.target.wants"
+#
+#    # Fix getty-static-service as debootstrap does not install dbus
+#    if [ -e "$rootfs//lib/systemd/system/getty-static.service" ] ; then
+#        local tty_services
+#        tty_services=$(for i in $(seq 2 "$num_tty"); do echo -n "getty@tty${i}.service "; done; )
+#        sed 's/ getty@tty.*/'" $tty_services "'/g' \
+#                "$rootfs/lib/systemd/system/getty-static.service" |  \
+#                sed 's/\(tty2-tty\)[5-9]/\1'"${num_tty}"'/g' > "$rootfs/etc/systemd/system/getty-static.service"
+#    fi
+#
+#    # This function has been copied and adapted from lxc-fedora
+#    rm -f "${rootfs}/etc/systemd/system/default.target"
+#    chroot "${rootfs}" ln -s /dev/null /etc/systemd/system/udev.service
+#    chroot "${rootfs}" ln -s /dev/null /etc/systemd/system/systemd-udevd.service
+#    chroot "${rootfs}" ln -s /lib/systemd/system/multi-user.target /etc/systemd/system/default.target
+#    # Setup getty service on the ttys we are going to allow in the
+#    # default config.  Number should match lxc.tty.max
+#    ( cd "${rootfs}/etc/systemd/system/getty.target.wants"
+#        for i in $(seq 1 "$num_tty") ; do ln -sf ../getty\@.service getty@tty"${i}".service; done )
+#
+#    # Since we use static-getty.target; we need to mask container-getty@.service generated by
+#    # container-getty-generator, so we don't get multiple instances of agetty running.
+#    # See https://github.com/lxc/lxc/issues/520 and https://github.com/lxc/lxc/issues/484
+#    ( cd "${rootfs}/etc/systemd/system/getty.target.wants"
+#        for i in $(seq 0 "$num_tty"); do ln -sf /dev/null container-getty\@"${i}".service; done )
+#
+#    return 0
+#}
+
+# Check if given path is in a btrfs partition
+is_btrfs()
+{
+    [ -e "$1" -a "$(stat -f -c '%T' "$1")" = "btrfs" ]
+}
+
+# Check if given path is the root of a btrfs subvolume
+is_btrfs_subvolume()
+{
+    [ -d "$1" -a "$(stat -f -c '%T' "$1")" = "btrfs" -a "$(stat -c '%i' "$1")" -eq 256 ]
+}
+
+try_mksubvolume()
+{
+    path=$1
+    [ -d "$path" ] && return 0
+    mkdir -p "$(dirname "$path")"
+    if which btrfs >/dev/null 2>&1 && is_btrfs "$(dirname "$path")"; then
+        btrfs subvolume create "$path"
+    else
+        mkdir -p "$path"
+    fi
+}
+
+try_rmsubvolume()
+{
+    path=$1
+    [ -d "$path" ] || return 0
+    if which btrfs >/dev/null 2>&1 && is_btrfs_subvolume "$path"; then
+        btrfs subvolume delete "$path"
+    else
+        rm -rf "$path"
+    fi
+}
+
+cleanup()
+{
+    try_rmsubvolume "$cache/partial-$release-$arch"
+    try_rmsubvolume "$cache/rootfs-$release-$arch"
+}
+
+download_devuan()
+{
+    case "$release" in
+      wheezy)
+        init=sysvinit
+        iproute=iproute
+        ;;
+      *)
+        init=init
+        iproute=iproute2
+        ;;
+    esac
+    packages=\
+$init,\
+ifupdown,\
+locales,\
+dialog,\
+isc-dhcp-client,\
+netbase,\
+net-tools,\
+$iproute,\
+openssh-server
+
+    cache=$1
+    arch=$2
+    release=$3
+    interpreter="$4"
+    interpreter_path="$5"
+
+    trap cleanup EXIT SIGHUP SIGINT SIGTERM
+
+    # Create the cache
+    mkdir -p "$cache"
+
+    # If devuan-archive-keyring isn't installed, fetch GPG keys directly
+    releasekeyring=/usr/share/keyrings/devuan-archive-keyring.gpg
+	# TODO download keyring if not found
+    if [ ! -f $releasekeyring ]; then
+        releasekeyring="$cache/archive-key.gpg"
+
+		if [ ! -f $releasekeyring ]; then
+			wget http://files.devuan.org/devuan-archive-keyring.gpg -O - --quiet \
+				| gpg --import --no-default-keyring --keyring="${releasekeyring}"
+		fi
+    fi
+    # check the mini devuan was not already downloaded
+    try_mksubvolume "$cache/partial-$release-$arch"
+    if [ $? -ne 0 ]; then
+        echo "Failed to create '$cache/partial-$release-$arch' directory"
+        return 1
+    fi
+
+    # download a mini devuan into a cache
+    echo "Downloading devuan minimal ..."
+    if [ "$interpreter" = "" ] ; then
+        debootstrap --verbose --variant=minbase --arch="$arch" \
+            --include=$packages --keyring="${releasekeyring}" \
+            "$release" "$cache/partial-$release-$arch" "$MIRROR"
+        if [ $? -ne 0 ]; then
+            echo "Failed to download the rootfs, aborting."
+            return 1
+        fi
+    else
+        debootstrap --foreign --verbose --variant=minbase --arch="$arch" \
+            --include=$packages --keyring="${releasekeyring}" \
+            "$release" "$cache/partial-$release-$arch" "$MIRROR"
+        if [ $? -ne 0 ]; then
+            echo "Failed to download the rootfs, aborting."
+            return 1
+        fi
+        mkdir -p "$(basename "$cache/partial-$release-$arch/$interpreter_path")"
+        cp "$interpreter" "$cache/partial-$release-$arch/$interpreter_path"
+        if [ $? -ne 0 ]; then
+            echo "failed to copy $interpreter to $cache/partial-$release-$arch/$interpreter_path"
+            return 1
+        fi
+        chroot "$cache/partial-$release-$arch" debootstrap/debootstrap --second-stage
+        if [ $? -ne 0 ]; then
+            echo "failed to update the rootfs, aborting"
+            return 1
+        fi
+    fi
+
+    mv "$1/partial-$release-$arch" "$1/rootfs-$release-$arch"
+    echo "Download complete."
+    trap EXIT
+    trap SIGINT
+    trap SIGTERM
+    trap SIGHUP
+
+    return 0
+}
+
+copy_devuan()
+{
+    cache=$1
+    arch=$2
+    rootfs=$3
+    release=$4
+
+    # make a local copy of the minidevuan
+    echo -n "Copying rootfs to $rootfs..."
+    try_mksubvolume "$rootfs"
+    if which btrfs >/dev/null 2>&1 && \
+       is_btrfs_subvolume "$cache/rootfs-$release-$arch" && \
+       is_btrfs_subvolume "$rootfs"; then
+      realrootfs="$(dirname "$config")"/rootfs
+      [ "$rootfs" = "$realrootfs" ] || umount "$rootfs" || return 1
+      btrfs subvolume delete "$realrootfs" || return 1
+      btrfs subvolume snapshot "$cache/rootfs-$release-$arch" "$realrootfs" || return 1
+      [ "$rootfs" = "$realrootfs" ] || mount --bind "$realrootfs" "$rootfs" || return 1
+    else
+        rsync -SHaAX "$cache/rootfs-$release-$arch"/ $rootfs/ || return 1
+    fi
+    return 0
+}
+
+install_devuan()
+{
+    rootfs=$1
+    release=$2
+    arch=$3
+    cache="$4/devuan"
+    interpreter="$5"
+    interpreter_path="$6"
+    flushcache=$7
+    mkdir -p $LOCALSTATEDIR/lock/subsys/
+    (
+        flock -x 9
+        if [ $? -ne 0 ]; then
+            echo "Cache repository is busy."
+            return 1
+        fi
+
+        if [ "$flushcache" -eq 1 ]; then
+            echo "Flushing cache..."
+            cleanup
+        fi
+
+        echo "Checking cache download in $cache/rootfs-$release-$arch ... "
+        if [ ! -e "$cache/rootfs-$release-$arch" ]; then
+            download_devuan "$cache" "$arch" "$release" "$interpreter" "$interpreter_path"
+            if [ $? -ne 0 ]; then
+                echo "Failed to download 'devuan base'"
+                return 1
+            fi
+        fi
+
+        copy_devuan "$cache" "$arch" "$rootfs" "$release"
+        if [ $? -ne 0 ]; then
+            echo "Failed to copy rootfs"
+            return 1
+        fi
+
+        return 0
+
+        ) 9>$LOCALSTATEDIR/lock/subsys/lxc-devuan
+
+    return $?
+}
+
+copy_configuration()
+{
+    path=$1
+    rootfs=$2
+    hostname=$3
+    arch=$4
+    num_tty=$5
+
+    # Generate the configuration file
+    # if there is exactly one veth network entry, make sure it has an
+    # associated hwaddr.
+    nics=$(grep -ce '^lxc\.net\.0\.type[ \t]*=[ \t]*veth' "$path/config")
+    if [ "$nics" -eq 1 ]; then
+        grep -q "^lxc.net.0.hwaddr" "$path/config" || sed -i -e "/^lxc\.net\.0\.type[ \t]*=[ \t]*veth/a lxc.net.0.hwaddr = 00:16:3e:$(openssl rand -hex 3| sed 's/\(..\)/\1:/g; s/.$//')" "$path/config"
+    fi
+
+    ## Add all the includes
+    echo "" >> "$path/config"
+    echo "# Common configuration" >> "$path/config"
+    if [ -e "${LXC_TEMPLATE_CONFIG}/devuan.common.conf" ]; then
+        echo "lxc.include = ${LXC_TEMPLATE_CONFIG}/devuan.common.conf" >> "$path/config"
+    fi
+    if [ -e "${LXC_TEMPLATE_CONFIG}/devuan.${release}.conf" ]; then
+        echo "lxc.include = ${LXC_TEMPLATE_CONFIG}/devuan.${release}.conf" >> "$path/config"
+    fi
+
+    ## Add the container-specific config
+    echo "" >> "$path/config"
+    echo "# Container specific configuration" >> "$path/config"
+    grep -q "^lxc.rootfs.path" "$path/config" 2> /dev/null || echo "lxc.rootfs.path = $rootfs" >> "$path/config"
+
+    cat <<EOF >> $path/config
+lxc.tty.max = $num_tty
+lxc.uts.name = $hostname
+lxc.arch = $arch
+lxc.pty.max = 1024
+EOF
+
+    if [ $? -ne 0 ]; then
+        echo "Failed to add configuration"
+        return 1
+    fi
+
+    return 0
+}
+
+post_process()
+{
+    local rootfs="$1";  shift
+    local release="$1"; shift
+    local arch="$1"; shift
+    local hostarch="$1"; shift
+    local interpreter="$1"; shift
+    local packages="$*"
+
+    # Disable service startup
+    cat > "${rootfs}/usr/sbin/policy-rc.d" << EOF
+#!/bin/sh
+exit 101
+EOF
+    chmod +x "${rootfs}/usr/sbin/policy-rc.d"
+
+    # If the container isn't running a native architecture, setup multiarch
+    if [ "$interpreter" = "" -a "${arch}" != "${hostarch}" ]; then
+        # Test if dpkg supports multiarch
+        if ! chroot "$rootfs" dpkg --print-foreign-architectures 2>&1; then
+            chroot "$rootfs" dpkg --add-architecture "${hostarch}"
+        fi
+    fi
+
+    # Write a new sources.list containing both native and multiarch entries
+    > "${rootfs}/etc/apt/sources.list"
+    if [ "$interpreter" != "" -a "${arch}" = "${hostarch}" ]; then
+        write_sourceslist "${rootfs}" "${release}" "${arch}"
+    else
+        write_sourceslist "${rootfs}" "${release}"
+    fi
+
+    # Install Packages in container
+    if [ -n "${packages}" ]; then
+        local pack_list
+        pack_list="${packages//,/ }"
+        echo "Installing packages: ${pack_list}"
+        install_packages "${rootfs}" "${pack_list}"
+    fi
+
+    # Re-enable service startup
+    rm "${rootfs}/usr/sbin/policy-rc.d"
+    
+    # end
+}
+
+clean()
+{
+    cache=${LXC_CACHE_PATH:-"$LOCALSTATEDIR/cache/lxc/devuan"}
+
+    if [ ! -e "$cache" ]; then
+        exit 0
+    fi
+
+    # lock, so we won't purge while someone is creating a repository
+    (
+        flock -x 9
+        if [ $? != 0 ]; then
+            echo "Cache repository is busy."
+            exit 1
+        fi
+
+        echo -n "Purging the download cache..."
+        rm --preserve-root --one-file-system -rf "$cache" && echo "Done." || exit 1
+        exit 0
+
+    ) 9>$LOCALSTATEDIR/lock/subsys/lxc-devuan
+}
+
+usage()
+{
+    cat <<EOF
+Template specific options can be passed to lxc-create after a '--' like this:
+
+  lxc-create --name=NAME [-lxc-create-options] -- [-template-options]
+
+Usage: $1 -h|--help -p|--path=<path> [-c|--clean] [-a|--arch=<arch>] [-r|--release=<release>]
+                                     [--mirror=<mirror>] [--security-mirror=<security mirror>]
+                                     [--package=<package_name1,package_name2,...>]
+                                     [-I|--interpreter-path=<interpreter path>]
+                                     [-F | --flush-cache] [-S|--auth-key=<keyfile>]
+
+Options :
+
+  -h, --help             print this help text
+  -p, --path=PATH        directory where config and rootfs of this VM will be kept
+  -S, --auth-key=KEYFILE SSH public key to inject into the container as the root user.
+  -a, --arch=ARCH        The container architecture. Can be one of: i686, x86_64,
+                         amd64, armhf, armel, powerpc. Defaults to host arch.
+  -r, --release=RELEASE  Debian release. Can be one of: wheezy, jessie, stretch, buster, sid.
+                         Defaults to current stable.
+  --mirror=MIRROR        Debian mirror to use during installation. Overrides the MIRROR
+                         environment variable (see below).
+  --security-mirror=SECURITY_MIRROR
+                         Debian mirror to use for security updates. Overrides the
+                         SECURITY_MIRROR environment variable (see below).
+  --packages=PACKAGE_NAME1,PACKAGE_NAME2,...
+                         List of additional packages to install. Comma separated, without space.
+  -c, --clean            only clean up the cache and terminate
+  --enable-non-free      include also Debian's contrib and non-free repositories.
+  -I|--interpreter-path=INTERPRETER-PATH
+                         Path of the binfmt interpreter to copy to the rootfs
+  -F | --flush-cache     Flush the devuan release cache
+
+Environment variables:
+
+  MIRROR                 The Debian package mirror to use. See also the --mirror switch above.
+                         Defaults to '$MIRROR'
+  SECURITY_MIRROR        The Debian package security mirror to use. See also the --security-mirror switch above.
+                         Defaults to '$SECURITY_MIRROR'
+
+EOF
+    return 0
+}
+
+options=$(getopt -o hp:n:a:r:cI:FS: -l arch:,auth-key:,clean,help,enable-non-free,mirror:,name:,packages:,path:,release:,rootfs:,security-mirror:,interpreter-path:,flush-cache -- "$@")
+if [ $? -ne 0 ]; then
+        usage "$(basename "$0")"
+        exit 1
+fi
+eval set -- "$options"
+
+littleendian=$(lscpu | grep '^Byte Order' | grep -q Little && echo yes)
+
+arch=$(uname -m)
+if [ "$arch" = "i686" ]; then
+    arch="i386"
+elif [ "$arch" = "x86_64" ]; then
+    arch="amd64"
+elif [ "$arch" = "armv7l" ]; then
+    arch="armhf"
+elif [ "$arch" = "aarch64" ]; then
+    arch="arm64"
+elif [ "$arch" = "ppc" ]; then
+    arch="powerpc"
+elif [ "$arch" = "ppc64le" ]; then
+    arch="ppc64el"
+elif [ "$arch" = "mips" -a "$littleendian" = "yes" ]; then
+    arch="mipsel"
+elif [ "$arch" = "mips64" -a "$littleendian" = "yes" ]; then
+    arch="mips64el"
+fi
+hostarch=$arch
+mainonly=1
+flushcache=0
+
+while true
+do
+    case "$1" in
+        -h|--help)            usage "$0" && exit 1;;
+           --)                shift 1; break ;;
+
+        -a|--arch)            arch=$2; shift 2;;
+        -S|--auth-key)        authkey=$2; shift 2;;
+        -I|--interpreter-path)
+                              interpreter="$2"; shift 2;;
+        -c|--clean)           clean=1; shift 1;;
+           --enable-non-free) mainonly=0; shift 1;;
+           --mirror)          MIRROR=$2; shift 2;;
+        -n|--name)            name=$2; shift 2;;
+           --packages)        packages=$2; shift 2;;
+        -p|--path)            path=$2; shift 2;;
+        -r|--release)         release=$2; shift 2;;
+           --rootfs)          rootfs=$2; shift 2;;
+           --security-mirror) SECURITY_MIRROR=$2; shift 2;;
+        -F|--flush-cache)     flushcache=1; shift 1;;
+        *)                    break ;;
+    esac
+done
+
+if [ ! -z "$clean" -a -z "$path" ]; then
+    clean || exit 1
+    exit 0
+fi
+
+if [ "$arch" = "i686" ]; then
+    arch=i386
+fi
+
+if [ "$arch" = "x86_64" ]; then
+    arch=amd64
+fi
+
+if [ "$interpreter" = "" ] ; then
+    if [ $hostarch = "i386" -a $arch = "amd64" ]; then
+        echo "can't create $arch container on $hostarch"
+        exit 1
+    fi
+
+    if [ $hostarch = "armhf" -o $hostarch = "armel" ] && \
+       [ $arch != "armhf" -a $arch != "armel" ]; then
+        echo "can't create $arch container on $hostarch"
+        exit 1
+    fi
+
+    if [ $hostarch = "powerpc" -a $arch != "powerpc" ]; then
+        echo "can't create $arch container on $hostarch"
+        exit 1
+    fi
+
+    if [ $hostarch = "mips" -a $arch != "mips" ] || \
+       [ $hostarch = "mipsel" -a $arch != "mipsel" ] || \
+       [ $hostarch = "mips64" -a $arch != "mips" -a $arch != "mips64" ] || \
+       [ $hostarch = "mips64el" -a $arch != "mipsel" -a $arch != "mips64el" ]; then
+        echo "can't create $arch container on $hostarch"
+        exit 1
+    fi
+else
+    if ! file -b "${interpreter}" |grep -q "statically linked" ; then
+        echo "'${interpreter}' must be statically linked" 1>&2
+        exit 1
+    fi
+    interpreter_path=$(find_interpreter "$interpreter")
+    if [ $? -ne 0 ] ; then
+        echo "no binfmt interpreter using $(basename "$interpreter")" 1>&2
+        exit 1
+    fi
+fi
+
+type debootstrap
+if [ $? -ne 0 ]; then
+    echo "'debootstrap' command is missing"
+    exit 1
+fi
+
+if [ -z "$path" ]; then
+    echo "'path' parameter is required"
+    exit 1
+fi
+
+if [ "$(id -u)" != "0" ]; then
+    echo "This script should be run as 'root'"
+    exit 1
+fi
+
+if [ -n "$authkey" ]; then
+    if [ ! -f "$authkey" ]; then
+	echo "SSH keyfile '$authkey' not found"
+	exit 1
+    fi
+    # This is mostly to prevent accidental uage of the private key instead
+    # of the public key.
+    if [ "${authkey: -4}" != ".pub" ]; then
+	echo "SSH keyfile '$authkey' does not end with '.pub'"
+	exit 1
+    fi
+fi
+
+release=${release:-stable}
+permanent_releases=('stable' 'testing' 'sid' 'unstable')
+if [[ ! "${permanent_releases[*]}" =~ (^|[^[:alpha:]])$release([^[:alpha:]]|$) ]]; then
+    if ! wget "${MIRROR}/dists/${release}/Release" -O /dev/null 2> /dev/null; then
+	echo "Invalid release ${release} (not found in mirror)"
+	exit 1
+    fi
+fi
+
+# detect rootfs
+config="$path/config"
+if [ -z "$rootfs" ]; then
+    if grep -q '^lxc.rootfs.path' "$config" 2> /dev/null ; then
+        rootfs=$(awk -F= '/^lxc.rootfs.path[ \t]+=/{ print $2 }' "$config")
+    else
+        rootfs=$path/rootfs
+    fi
+fi
+
+# determine the number of ttys - default is 4
+if grep -q '^lxc.tty.max' "$config" 2> /dev/null ; then
+    num_tty=$(awk -F= '/^lxc.tty.max[ \t]+=/{ print $2 }' "$config")
+else
+    num_tty=4
+fi
+
+install_devuan "$rootfs" "$release" "$arch" "$LXC_CACHE_PATH" "$interpreter" "$interpreter_path" "$flushcache"
+if [ $? -ne 0 ]; then
+    echo "failed to install devuan"
+    exit 1
+fi
+
+configure_devuan "$rootfs" "$name" $num_tty
+if [ $? -ne 0 ]; then
+    echo "failed to configure devuan for a container"
+    exit 1
+fi
+
+copy_configuration "$path" "$rootfs" "$name" $arch $num_tty
+if [ $? -ne 0 ]; then
+    echo "failed write configuration file"
+    exit 1
+fi
+
+#configure_debian_systemd "$path" "$rootfs" "$config" $num_tty
+
+post_process "${rootfs}" "${release}" ${arch} ${hostarch} "${interpreter}" "${packages}"
+
+if [ ! -z "$clean" ]; then
+    clean || exit 1
+    exit 0
+fi