A heroku buildpack for bash script. It looks like this /bin/bash /app/.sh.
echo -e "echo 'Hello from dokku'" > .sh
git add .sh; git commit -m 'Added heroku-buildpack-shell';
git push dokku master;
echo -e "EXPORT=BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi" > .env
echo -e "https://github.com/heroku/heroku-buildpack-ruby\nhttps://github.com/gtank/heroku-buildpack-shell" > .buildpacks