End to End Tests on CircleCI with Docker - Rails, Capybara, Selenium

This solution, even though it has many pros, it brings in some difficulties as well. One of which are end to end tests. It may be really tricky to execute those tests in a proper way, especially when we don't have that much of a control over the process on external hosts, for example during CircleCI build. I decided to share with you what I've learned - how to set end to end tests on CircleCI. The