git pull sync

git-sync.sh

#!/bin/bash
LOCKFILE=/home/ubuntu/docker.lock
if [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
    echo "already running"
    exit
fi

# make sure the lockfile is removed when we exit and then claim it
trap "rm -f ${LOCKFILE}; exit" INT TERM EXIT
echo $$ > ${LOCKFILE}

#do git pull
cd /home/ubuntu/[git-folder]
git pull
sleep 1s
rm -f ${LOCKFILE}