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

The simplest way to get your Docker-based application to production is to deploy it onto a single host with Docker Compose. If you have properly prepared the host with the right software, including Docker Compose, you can deploy your application there in a production-ready configuration. This can be completed in a matter of hours and can serve applications with low to moderate performance and availability demands efficiently. If you make the right adjustments to your configuration files, your application will be ready to deploy to production. By using shell scripts that encapsulate long, verbose commands, you can more easily handle regular maintenance and updates for your applications. In the simplest case, you can use external monitoring and alerting for this class of application and handle this concern with low effort.

You can apply what you have learned in this chapter to increase the sophistication of the Dockerfile and the docker-compose.yml file that support your application...