update a website after a github commit

websiteupdate.sh

#!/bin/sh
set -e
if [ ! -f /var/www/html/public/doDeploy ]; then
  exit;
fi

rm /var/www/html/public/doDeploy
STAMP=$(date +%s)
WORKDIR=/tmp/$STAMP
NEWDIR=$WORKDIR/new
BACKUPDIR=$WORKDIR/old
mkdir -p $WORKDIR
mkdir -p $NEWDIR
mkdir -p $BACKUPDIR
git clone repo-url.git $NEWDIR
#(cd $NEWDIR && git checkout develop)
(cd $NEWDIR && composer install)
(cd $NEWDIR && mkdir data/logs)
cp /var/www/html/.env $NEWDIR/
mv /var/www/html/* $BACKUPDIR/
mv /var/www/html/.env $BACKUPDIR/
mv $NEWDIR/* /var/www/html
mv $NEWDIR/.env /var/www/html
chown -R ec2-user:apache /var/www/html/
chown -R ec2-user:apache /var/www
chmod 2775 /var/www && find /var/www -type d -exec chmod 2775 {} \;