The text discusses the setup and execution of integration tests using containers, specifically through TestContainers, to ensure consistent testing environments across different machines like developer laptops and CI nodes. It details a project aimed at creating integration tests for a Couchbase-based application, utilizing a sample app to demonstrate the process. The testing setup involves using Selenium for frontend testing and Docker containers for running the necessary components: Couchbase Server, a Java backend, and an Angular frontend. The author illustrates how to configure and link these containers, ensuring they start in the correct sequence with TestContainers' waiting mechanisms, and concludes by highlighting the benefits of this approach for testing Couchbase applications.