Script to find which buildpack version was good starting from a known bad one

test-heroku-buildpack-versions.sh

#!/bin/bash

PREV=146 # 146 is the currently known bad version
START=147
STOP=149

rails new zachs-sample-rails-app -d postgresql &&
  cd zachs-sample-rails-app &&
  \rm .git/hooks/pre-commit &&
  git add . &&
  git commit -m "initial commit"


for i in `seq $START $STOP` ; do
  heroku create --remote heroku-cedar-14-$i --stack cedar-14 zachs-sample-rails-app-$i &&
    heroku config:set COMPILE_TASKS="assets:precompile" &&

  heroku buildpacks:add https://github.com/Genius/heroku-buildpack-compile-tasks -i 1 -a zachs-sample-rails-app-$i
  heroku buildpacks:remove https://github.com/heroku/heroku-buildpack-ruby.git#v$PREV -a zachs-sample-rails-app-$i
  heroku buildpacks:add https://github.com/heroku/heroku-buildpack-ruby.git#v$i -i 1 -a zachs-sample-rails-app-$i
  PREV=$i
  git commit -m "buildpack v$i" --allow-empty && git push -f heroku-cedar-14-$i  master
  if [ $? != 0 ]; then
    echo "buildpack v$i FAILED"
  else
    echo "buildpack v$i PASSED"
    exit 0
  fi
done