How do I clear the build cache?

Issue

You want to clear the build cache for your app.

You can clear the build cache for an app by using the Heroku Builds plugin:

First install the plugin:

heroku plugins:install heroku-builds

Then use the following command to clear the cache:

heroku builds:cache:purge -a example-app

The cache will be rebuilt on the next deploy. If you do not have any new code to deploy, you can push an empty commit.

$ git commit --allow-empty -m "Purge cache"
$ git push heroku master

Where example-app is replaced by the name of the app you want to clear the cache for.