Run a Jekyll site as an Ubuntu Service

jekyll-site

#!/bin/sh -e
# ========================
#  Start a Jekyll Server
# ========================
#
# Usage: /etc/init.d/jekyll-site {start|stop|force-reload|restart|status}
#

### BEGIN INIT INFO
# Provides:          jekyll-site
# Required-Start:    $network $local_fs $remote_fs
# Required-Stop:     $network $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: start jekyll-site jekyll server
### END INIT INFO

DEFAULT_PID_FILE="/var/run/jekyll-site.pid"
DEFAULT_LOG_FILE="/var/log/jekyll-site.log"

NAME=jekyll-site
DESC=jekyll-site
DAEMON=/etc/init.d/jekyll-site
SITEDIR="/srv/jekyll-site"
JEKYLL=$(which jekyll)

if [ -z "$PID" ]
then
        PID=$DEFAULT_PID_FILE
fi

do_start() {
    start-stop-daemon \
        --make-pid \
        --quiet \
        --background \
        --start \
        --pidfile $DEFAULT_PID_FILE \
        --chdir $SITEDIR \
        --chuid $USER:$USER \
        --exec $JEKYLL serve -- build \
        --port 8080 \
        --watch >> $DEFAULT_LOG_FILE 2>&1
}

do_stop() {
    start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PID
    RETVAL="$?"

    sleep 1
    return "$RETVAL"
}

case "$1" in
    start)
        do_start
        ;;
    stop)
        do_stop
        ;;
    restart)
        do_stop
        do_start
        ;;
    status)
        status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
        ;;
    *)
        echo "Usage: $NAME {start|stop|restart|status}" >&2
        exit 3
        ;;
esac

I could not get this script to work on ubuntu 16.10 @ddavison