Book Image

Docker for Developers

By : Richard Bullington-McGuire, Andrew K. Dennis, Michael Schwartz
2 (1)
Book Image

Docker for Developers

2 (1)
By: Richard Bullington-McGuire, Andrew K. Dennis, Michael Schwartz

Overview of this book

Docker is the de facto standard for containerizing apps, and with an increasing number of software projects migrating to containers, it is crucial for engineers and DevOps teams to understand how to build, deploy, and secure Docker environments effectively. Docker for Developers will help you understand Docker containers from scratch while taking you through best practices and showing you how to address security concerns. Starting with an introduction to Docker, you’ll learn how to use containers and VirtualBox for development. You’ll explore how containers work and develop projects within them after you’ve explored different ways to deploy and run containers. The book will also show you how to use Docker containers in production in both single-host set-ups and in clusters and deploy them using Jenkins, Kubernetes, and Spinnaker. As you advance, you’ll get to grips with monitoring, securing, and scaling Docker using tools such as Prometheus and Grafana. Later, you’ll be able to deploy Docker containers to a variety of environments, including the cloud-native Amazon Elastic Kubernetes Service (Amazon EKS), before finally delving into Docker security concepts and best practices. By the end of the Docker book, you’ll be able to not only work in a container-driven environment confidently but also use Docker for both new and existing projects.
Table of Contents (21 chapters)
1
Section 1: An Introduction to Docker – Containers and Local Development
6
Section 2: Running Docker in Production
14
Section 3: Docker Security – Securing Your Containers

Summary

In this chapter, we introduced Docker Compose as a superior management tool for managing and running a complex system of containers. We described several useful docker-compose configuration file options that allow us to specify ports to expose, local networking, and local volumes. We exploited the docker-compose tool's inheritance capabilities as well.

A critical part of using Docker is the development cycle. We typically edit, build, run, and test each cycle—then repeat. The size of images, as well as the time spent building, publishing, and downloading them, can be strategically reduced.

We also explored some alternatives to using .sh scripts and docker-compose. These are a natural next step in your Docker education as they provide facilities for deploying your orchestrations to swarms or clusters of servers in production or for testing.

The next few chapters go into detail about how to deploy your applications and how to implement continuous integration...