If you are reading this article, probably you have already found yourself wrestling with a docker-compose.yml file. Whether you are a backend developer, DevOps engineer, cloud engineer, or just getting started with Docker, it is common for Docker Compose to become more challenging in day-to-day work as a project grows. Maybe you have services that are only needed occasionally, like debugging or testing tools, repeated configuration across different services, or errors caused by one container starting before another one is actually ready. Fortunately, Docker Compose provides advanced features to help with these scenarios and make your development environment more organized and flexible. Three of the main features are profiles , extends , and depends_on . That is what we will explore in this article. In this article, we will look at each of these features with explanations and practical examples.…