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

Introducing Docker Hub

You will typically interact with Docker Hub from the command line or in Dockerfiles, but you can use the Docker Hub website (https://hub.docker.com) to search for any pre-built containers that you know you want to use. You can also use the website to discover pre-built containers that might be of interest to you.

In general, you will inherit from some pre-built Docker containers on Docker Hub to create your own custom containers. For example, you might inherit from a Linux distribution container and install the software you want for your project within that inherited/custom container.  

When you inherit from the Linux distribution, some of that distribution's base software packages are installed. If you inherit from a Debian-flavor Linux container, you will be able to use the apt package manager within the container to install software as if you were running that Debian-flavor Linux container on a dedicated or virtual machine.

Some pre...