zip up the buildpack and install it as an admin buildpack (and other stuff)

pack_and_deploy.rb

require "tmpdir"
require "zip"

EXCLUDE_FROM_BUILDPACK = [
    /\.git/,
    /repos/
]

def package
  Dir.mktmpdir do |temp_dir|
    copy_buildpack_contents(temp_dir)
    compress_buildpack(temp_dir)
  end
end

def copy_buildpack_contents(target_path)
  run_cmd "cp -r * #{target_path}"
end

def in_pack?(file)
  !EXCLUDE_FROM_BUILDPACK.any? { |re| file =~ re }
end

def compress_buildpack(target_path)
  Zip::File.open('ruby_buildpack.zip', Zip::File::CREATE) do |zipfile|
    Dir[File.join(target_path, '**', '**')].each do |file|
      zipfile.add(file.sub(target_path + '/', ''), file) if (in_pack?(file))
    end
  end
end

def run_cmd(cmd)
  puts "$ #{cmd}"
  output = `#{cmd}`
  puts output
  output
end


run_cmd("rm ruby_buildpack.zip")
package
run_cmd("cf delete-buildpack heroku-buildpack -f")
run_cmd("cf create-buildpack heroku-buildpack ruby_buildpack.zip 1 --enable")
run_cmd("rm ruby_buildpack.zip")

Dir.chdir("/Users/pivotal/workspace/buildpacks/heroku-buildpack-ruby-integration/test_applications/rails_latest_web_app") do
  run_cmd """
    cf delete -f rails_latest_web_app &&
    cf push rails_latest_web_app --no-start &&
    cf bind-service rails_latest_web_app lilelephant &&
    cf push rails_latest_web_app -c 'bundle exec rake db:migrate && bundle exec rails s -p $PORT' -b heroku-buildpack
  """
end