Summary

In this chapter, you learned what Docker is and how you can use it for the Cargo Tracker application. You learned that a container is an executable package of your software that contains an application, dependencies, and the system tools your application needs to run. After that, we investigated what Docker is and how it uses containers. With this knowledge, you specified your first Dockerfile for the Cargo Tracker application. Using the Docker command-line interface, you have learned how to build your container and start it. You also explored other ways of starting the container using detached mode and how to stop a container. Finally, you learned how to create a Docker Compose file and how to start it.

These steps are very important for when we run the Cargo Tracker application in the cloud in the following chapters.