Protractor documentation (AngularJS) - test unable to launch

Is there any documentation for protractor use with CircleCI?

I’m having trouble figuring out how to appropriately launch the selenium server and get it to point to the external test db. Works fine locally. Are there documents anywhere walking through the CircleCI requirements to launch? I’ve run into errors in trying to use webdriver with protractor and a baseUrl

Here’s the error:
protractor protractor/config.js --baseUrl=''
Using the selenium server at http://localhost:4444/wd/hub
[launcher] Running 1 instances of WebDriver

onError(new Error(message));
at ClientRequest. (/home/ubuntu/chefalytics/node_modules/protractor/node_modules/selenium-webdriver/http/index.js:365:15)