In this chapter, we covered how to build multiple containers to make a basic service composed of a web server, application server, and the database, launch multiple containers together, and tie them together with networking. We also worked through what the most common issues might be when connecting services and what the common pitfalls with these basic building blocks are. Some hints about future topics were also given (volumes, service discovery, credentials passing, and so on), but we will cover those in later chapters in depth. In the next chapter, we will be turning our little service into a robust service with horizontally scaled components.