You learned a lot about how Docker works throughout this book. In addition to the basics of Docker, we looked back at some fundamental concepts of web operations and how it helps us realize the full potential of Docker. You gained knowledge of key Docker and operating systems concepts to get a deeper understanding of what is happening behind the scenes. You now have an idea of how our application goes from our code down to the actual call in the operating system of our Docker host. You learned a lot about the tools to deploy and troubleshoot our Docker containers in production in a scalable and manageable fashion.

However, this should not stop you from continuing to develop and practice using Docker to run our web applications in production. We should not be afraid to make mistakes and gain further experience on the best ways to run Docker in production. As the Docker community evolves, so do these practices through the collective experience of the community. So, we should continue...