How to clean Heroku dependency cache (unmanaged maven dependencies)

Question

I have to use an unmanaged SNAPSHOT dependency in my java/maven heroku app. I do this using a project-local maven repository as desribed in this article.

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Answer 1

Login to heroko by console, go to the git repository directory of your app, run the following commands and try to push to the heroku git repository again

$ heroku config:set MAVEN_CUSTOM_GOALS="clean package"
$ heroku config:set MAVEN_CUSTOM_OPTS="--update-snapshots -DskipTests=true"

Now, it will download the latest SNAPSHOT from the repository before build. Refer this heroku build pack for java for more details.

You can also configure a custom settings.xml for your maven, refer this heroku documentation.