Setup default user for testing purposes

I’m trying to include Tyk Gateway as part of a setup we have based around Docker Compose.

For integration testing, we want the ability to build and run automatically.

I’d therefore like to be able to specify an API user which would only be used for these tests.

Is there a way to specify a user in a config file?

The alternative is to use a script as part of the testing run, but having the ability to hard code would be a useful shortcut.

Thanks!