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)

Handling Docker Containers

In the previous chapter, we explained the stimulating and sustainable concepts that clearly articulated Docker's way of crafting futuristic and flexible application-aware containers. We discussed all the relevant details of bringing Docker containers into multiple environments (on-premise as well as off-premise). You can easily replicate these Docker capabilities in your own environments to get a rewarding experience. Now, the next logical step for us is to understand container life cycle aspects in a decisive manner. You are to learn the optimal utilization of your own containers as well as those of other third-party containers in an efficient and risk-free way. Containers are to be found, accessed, assessed, and leveraged toward bigger and better distributed applications.

In this chapter, we will dig deeper and describe the critical aspects of container handling at length. A number...