Schenker - Learn Docker: Fundamentals of Docker 18.x: Everything you need to know about containerizing your applications and running them in production

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Gabriel N. Schenker has more than 25 years of experience as an independent consultant, architect, leader, trainer, mentor, and developer. Currently, Gabriel works as Senior Curriculum Developer at Confluent after coming from a similar position at Docker. Gabriel has a Ph.D. in Physics, and he is a Docker Captain, a Certified Docker Associate, and an ASP Insider. When not working, Gabriel enjoys time with his wonderful wife Veronicah and his children.

Peter McKee is a Software Architect and Senior Software Engineer at Docker, Inc. He leads the technical team that delivers the Docker Success Center. He's been leading and mentoring teams for more than 20 years. When not building things with software, he spends his time with his wife and seven kids in beautiful Austin, TX.

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Docker containers have revolutionized the software supply chain in small and big enterprises. Never before has a new technology so rapidly penetrated the top 500 enterprises worldwide. Companies that embrace containers and containerize their traditional mission-critical applications have reported savings of at least 50% in total maintenance costs and a reduction of 90% (or more) in deploying new versions of those applications. Furthermore, they are benefiting from increased security by using containers rather than running applications outside containers.
This book starts from scratch, introducing you to Docker fundamentals and setting up an environment to work with it. Then, we delve into concepts such as Docker containers, Docker images, and Docker Compose. We will also cover the concepts of deployment, orchestration, networking, and security. Furthermore, we explain Docker functionalities on public clouds, such as AWS.
By the end of this book, you will have hands-on experience working with Docker containers and orchestrators, such as SwarmKit and Kubernetes.

This book is targeted at system administrators, operations engineers, DevOps engineers, and developers or stakeholders who are interested in getting started with Docker from scratch. No prior experience with Docker containers is required.

, What Are Containers and Why Should I Use Them?, focuses on the software supply chain and the friction within it. It then presents containers as a means to reduce this friction and add enterprise-grade security on top of it. In this chapter, we also look into how containers and the ecosystem around them are assembled. We specifically point out the distinction between the upstream OSS components (Moby) that form the building blocks of the downstream products of Docker and other vendors.

, Setting up a Working Environment, discusses in detail how to set up an ideal environment for developers, DevOps engineers, and operators that can be used when working with Docker containers.

, Working with Containers, teaches how start, stop, and remove containers. The chapter also teaches how to inspect containers to retrieve additional metadata. Furthermore, it introduces how to run additional processes and how to attach to the main process in an already running container. It also shows how to retrieve logging information from a container that is produced by the processes running inside it.

, Creating and Managing Container Images , introduces the different ways to create container images, which serve as templates for containers. It introduces the inner structure of an image and how it is built.

, Data Volumes and System Management, introduces data volumes that can be used by stateful components running in containers. The chapter also introduces system-level commands that are used to gather information about Docker and the underlying OS, as well as commands to clean the system from orphaned resources. Finally, it introduces the system events generated by the Docker engine.