export PATH=/bin:/sbin:/usr/bin:/usr/sbin

mount proc

for p in $(cat /proc/cmdline); do

case $p in

docker-root.switch_root)

SWITCH_ROOT=true

;;

docker-root.debug)

DEBUG=true

;;

esac

umount proc

if [ -n "${SWITCH_ROOT}" -a -z "$ROOT_SWITCHED" ]; then

if mount -t tmpfs -o size=90% tmpfs /mnt; then

if tar -C / --exclude=mnt -cf - . | tar -C /mnt/ -xf - ; then

mkdir /mnt/mnt

export ROOT_SWITCHED=true

exec switch_root /mnt /init

fi

fi

[ -z "${DEBUG}" ] && set -e

mount -t devtmpfs devtmpfs /dev

mkdir -p /var/log

syslogd

sleep 1

logger -s -p user.info -t "init[$$]" "Start init"

trap 'logger -s -p user.info -t "init[$$]" "trapped at line $LINENO"' ERR

mkdir -p /dev/pts

logger -s -p user.info -t "init[$$]" "Mounting system"

mount -t devpts devpts /dev/pts

mount -t proc proc /proc

mount -t tmpfs tmpfs /run

mount -t sysfs sysfs /sys

mount -t tmpfs cgroup /sys/fs/cgroup

for i in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do

mkdir -p /sys/fs/cgroup/$i

mount -t cgroup -o $i cgroup /sys/fs/cgroup/$i

passwd -l root

mkdir -p /var/lib/docker

mkdir -p /var/lib/docker-root

DEVICE=$(blkid | grep -e 'LABEL="DOCKERROOT-DATA"' | head -n 1 | sed 's/:.*//')

if [ -n "$DEVICE" ]; then

PARTNAME=$(echo "$DEVICE" | sed 's/.*\///')

logger -s -p user.info -t "init[$$]" "Mounting HDD /dev/$PARTNAME"

mkdir -p /mnt/$PARTNAME

if (! e2fsck -p /dev/$PARTNAME) || (! mount -t ext4 /dev/$PARTNAME /mnt/$PARTNAME); then

logger -s -p user.info -t "init[$$]" "Running from memory, this won't be good..."

else

rm -rf /var/lib/docker

mkdir -p /mnt/$PARTNAME/var/lib/docker

ln -s /mnt/$PARTNAME/var/lib/docker /var/lib/docker

rm -rf /var/lib/docker-root

mkdir -p /mnt/$PARTNAME/var/lib/docker-root

ln -s /mnt/$PARTNAME/var/lib/docker-root /var/lib/docker-root

if [ ! -d /mnt/$PARTNAME/home ]; then

mv /home /mnt/$PARTNAME/home

else

rm -rf /home

fi

ln -s /mnt/$PARTNAME/home /home

rm -rf /opt

mkdir -p /mnt/$PARTNAME/opt

ln -s /mnt/$PARTNAME/opt /opt

mkdir -p /mnt/$PARTNAME/etc

mkdir -p /mnt/$PARTNAME/work/etc

mount -t overlay overlay -o lowerdir=/etc,upperdir=/mnt/$PARTNAME/etc,workdir=/mnt/$PARTNAME/work/etc /etc

fi

DEVICE=$(blkid | grep -e 'LABEL="DOCKERROOT-SWAP"' | head -n 1 | sed 's/:.*//')

if [ -n "$DEVICE" ]; then

logger -s -p user.info -t "init[$$]" "Enabling SWAP $DEVICE"

if ! swapon $DEVICE; then

logger -s -p user.info -t "init[$$]" "Could not make swap on $DEVICE"

fi

if [ -x /var/lib/docker-root/init.sh ]; then

logger -s -p user.info -t "init[$$]" "Executing custom configuration in init.sh"

/var/lib/docker-root/init.sh || true

logger -s -p user.info -t "init[$$]" "Set hostname with /etc/hostname"

/bin/hostname -F /etc/hostname

logger -s -p user.info -t "init[$$]" "Executing ACPId"

/usr/sbin/acpid

logger -s -p user.info -t "init[$$]" "Executing startup scripts in /etc/init.d"

/etc/init.d/rcS

if [ -x /var/lib/docker-root/start.sh ]; then

logger -s -p user.info -t "init[$$]" "Starting custom script start.sh"

/var/lib/docker-root/start.sh &

sync

logger -s -p user.info -t "init[$$]" "Starting console"

respawn /sbin/getty 38400 tty0 &

respawn /sbin/getty 38400 tty1 &

if dmesg | grep 'ttyS0 at I/O'; then

respawn /sbin/getty -L 9600 ttyS0 vt100 &

chvt 2

logger -s -p user.info -t "init[$$]" "Configuring sysctl"

sysctl -p /etc/sysctl.conf

logger -s -p user.info -t "init[$$]" "Starting Docker daemon"

/etc/init.d/docker start

set -mb

trap '' SIGCHLD