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)

Summary

Containers do not deliver anything substantial in an isolated or solo way. They need to be systematically built and provided with a network interface along with a port number. These lead to the standardized exposition of containers to the outside world, facilitating other hosts or containers to find, bind, and leverage their unique capabilities on any network. Thus, the network accessibility is paramount for containers to get noticed across and be utilized in innumerable ways. This chapter was dedicated to showcase how containers are being designed and deployed as a service, and how the aspect of container networking comes in handy in precisely and profusely empowering the peculiar world of container services as the days unfold. In the forthcoming chapters, we will deal and dwell at length on the various capabilities of Docker containers in the software-intensive IT environments.

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