Book Image

Learning Docker - Second Edition

By : Vinod Singh, Pethuru Raj, Jeeva S. Chelladhurai
Book Image

Learning Docker - Second Edition

By: Vinod Singh, Pethuru Raj, Jeeva S. Chelladhurai

Overview of this book

Docker is an open source containerization engine that offers a simple and faster way for developing and running software. Docker containers wrap software in a complete filesystem that contains everything it needs to run, enabling any application to be run anywhere – this flexibily and portabily means that you can run apps in the cloud, on virtual machines, or on dedicated servers. This book will give you a tour of the new features of Docker and help you get started with Docker by building and deploying a simple application. It will walk you through the commands required to manage Docker images and containers. You’ll be shown how to download new images, run containers, list the containers running on the Docker host, and kill them. You’ll learn how to leverage Docker’s volumes feature to share data between the Docker host and its containers – this data management feature is also useful for persistent data. This book also covers how to orchestrate containers using Docker compose, debug containers, and secure containers using the AppArmor and SELinux security modules.
Table of Contents (13 chapters)

Running Services in a Container

We have come thus far by carefully explaining the various aspects of the Docker technology. The previous chapters definitely have laid down a stellar foundation for the overwhelmingly accepted Docker platform and the forthcoming chapters will be like the meticulously crafted buildings on that grandiose foundation.

We described the important building blocks (the highly usable and reusable Docker images) to bring forth powerful Docker containers. There are briefs about the various easy-to-learn-and-employ techniques and tips on how to store and share Docker images through a well-designed storage framework. Typically, images have to go through a series of verifications, validations, and refinements constantly in order to be right and relevant for the aspiring development community.

In this chapter, we are going to take our learning to the next level by detailing the key steps in creating...