This article serves as a “how-to” guide for using Selenium Docker images alongside CodeceptJS and an Express server. In it, we will cover: What is E2E acceptance testing? Why use Docker? Loosely coupled testing tools Layers of testing tools Creating a test project E2E Acceptance Testing Acceptance testing is a phase in a typical software development process. It covers tests to see if the product has met the overall requirement specifications, and if it is “accepted” as ready for delivery. It is typically the last phase of testing before releasing the product to production. This could include user-based acceptance tests, business-based acceptance tests, or even alpha/beta testing. End-to-End (E2E) testing is one implementation of acceptance testing. It is an approach to acceptance testing, but the terms are not synonymous. It allows testing the flow of an application from start to finish to see if it is performing as designed. In....