This buildpack is intended for use after the regular ruby-buildpack.
If you are using the default buildpack, manually set your buildpack to Heroku's default Ruby buidlpack
heroku buildpacks:set https://github.com/heroku/heroku-buildpack-ruby
Append the buildpack-ruby-rake-deploy-tasks to your buildpack list:
heroku buildpacks:add https://github.com/arkency/buildpack-ruby-rake-deploy-tasks
Configure DEPLOY_TASKS environment variable with the tasks you want to run:
heroku config:set DEPLOY_TASKS='db:migrate'
MIT, see the LICENSE file.
Copy the snippet above into CLI.