Access option values webdriver.io

Right now with my ui tests using WebdriverIO, I have this in my configuration file:

var baseUrl = 'http://localhost:3000';

global.testParameters = {
  baseUrl: baseUrl
};

This gives me access to my base url in the tests however it has to be fixed in the configuration file and I can't use the --baseUrl option when running wdio command. The reason for this is because from everything I have read, I don't see a way to have access to command line option values in my tests.

Is there a way to access the value of the command line options (specifically --baseUrl) in my actual test files?