At the moment, our test index on Elasticsearch is filled with dummy users. Although this is not an issue right now, it may become an issue in the future (for example, if we decide to change the schema). In any case, it's always a good practice to clean up side effects after the tests have finished in order to leave a blank slate for subsequent test runs. Therefore, at the end of each test, we should delete the Elasticsearch index. This is not a problem because the index will be recreated automatically by the test code.
Therefore, add the following lines below into our e2e.test.sh script; this will clean up the test index (you should place it after Elasticsearch is responsive, but before you run the API server):
