git-hook.sh

useradd -mrU git
mkdir /home/git/.ssh
chmod 700 /home/git/.ssh
cp /root/.ssh/authorized_keys /home/git/.ssh
chmod 600 .ssh/authorized_keys
chsh -s /usr/bin/git-shell git 
mkdir /home/git/apps.git
cd /home/git/apps.git
git init --bare
export DEPLOYDIR=/location/of/your/stuff
export COMMAND="command --to run on your repo"
cat >/home/git/apps.git/hooks/post-receive <<EOL
#!/bin/sh                                                                                             
  
# 
## store the arguments given to the script                                                            
  
read oldrev newrev refname                                                                            
            

## Where to store the log information about the updates                                               
            
LOGFILE=./post-receive.log

# The deployed directory (the running site)
DEPLOYDIR=$DEPLOYDIR

##  Record the fact that the push has been received
echo -e "Received Push Request at \$( date +%F )" >> \$LOGFILE
echo " - Old SHA: \$oldrev New SHA: \$newrev Branch Name: \$refname" >> \$LOGFILE

## Update the deployed copy
echo "Starting Deploy" >> \$LOGFILE

echo " - Starting code update"
GIT_WORK_TREE="\$DEPLOYDIR" git checkout -f
echo " - Finished code update"

echo " - Starting build"
$COMMAND
echo " - Finished build"

echo "Finished Deploy" >> \$LOGFILE
EOL
chmod +x /home/git/apps.git/hooks/post-receive  
chown git:git -R /home/git/apps.git/ /home/git/.ssh $DEPLOYDIR