This is a git pre-recieve hook that compiles a slug using heroku buildpacks and optionally uploads it to s3 and generate a pre-signed url for downloading it. This script assumes you have s3cmd installed and configured.

pre-receive

#!/bin/bash
while read oldrev newrev refname
do
    # Only build the master branch. 
    if [[ $refname = "refs/heads/master" ]] ; then
        echo "building------> $newrev ... "
        #We get the archive and pass it to the slug builder
        slug_id=newapp
        git archive $newrev | docker run -i -name $newrev  -a stdin -a stdout -a stderr flynn/slugbuilder - >  $newrev.tgz
#       s3cmd put $newrev.tgz  s3://pyxiscloud/$newrev.tgz 
        #s3cmd signurl s3://pyxiscloud/$newrev.tgz  
        #s3cmd signurl s3://pyxiscloud/$newrev.tgz "1415837645"
        docker rm $newrev
        #mv $newrev.tgz ../../$newrev.tgz
        # $? is a shell variable which stores the return code from what we just ran
        rc=$?
        if [[ $rc != 0 ]] ; then
            # A non-zero return code means an error occurred, so tell the user and exit
            echo "for some reason we where unable to build $newrev - Please try again"
            exit $rc
        fi
    fi
done

# Bingo
exit 0