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

Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, container names, folder names, filenames, file extensions, pathnames, dummy URLs, and user input. Here is an example: "This file needs to be added to the conf.d directory on the host."

A block of code or Dockerfile is set as follows:

FROM ubuntu:bionic
RUN apt-get -qq update && \
apt-get -qq install -y nodejs npm > /dev/null
RUN mkdir -p /app/public /app/server
COPY src/package.json* /app
WORKDIR /app
RUN npm -s install

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

FROM alpine:20191114
RUN apk update && \
apk add nodejs nodejs-npm
RUN addgroup -S app && adduser -S -G app app
RUN mkdir -p /app/public /app/server
ADD src/package.json* /app/

Any command-line input or output is written as follows:

$ cp docker_daemon.yaml  /path/to/conf.d/
$ vim /path/to/conf.d/conf.yaml

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "You can do this by clicking the Get It Now button on the Azure Marketplace website."

Tips or important notes

Appear like this.