Book Image

Developing with Docker

By : Jaroslaw Krochmalski, Jarosław Krochmalski
Book Image

Developing with Docker

By: Jaroslaw Krochmalski, Jarosław Krochmalski

Overview of this book

This fast-paced practical guide will get you up and running with Docker. Using Docker, you will be able to build, ship, and run many distributed applications in real time. You will start with quickly installing Docker and start working with images and containers. We will present different types of containers and their applications, and show you how to find and build images. You will learn how you can contribute to the image repository by publishing different images. This will familiarize you with the image building process and you will be able to successfully run your programs within containers. By finishing this book, you will be well equipped in deploying your applications using Docker and will have a clear understanding of concepts, techniques, and practical methods to get it running in production systems.

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Developing with Docker
Jaroslaw Krochmalski | Jarosław Krochmalski
Nov, 2016 | 262 pages
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Table of Contents (16 chapters)
Developing with Docker
Developing with Docker
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Introduction to Docker
Introduction to Docker
The basic idea
Containerization versus virtualization
Benefits of using Docker
Tools overview
Summary
2
Installing Docker
Installing Docker
Hardware requirements
Installing on Windows
Installing on Mac OS
Installing on Linux
Installing on the cloud — AWS
Summary
3
Understanding Images and Containers
Understanding Images and Containers
Images
Layers
Containers
Docker registry, repository and index
Summary
4
Networking and Persistent Storage
Networking and Persistent Storage
Docker networking
Docker volumes
Summary
5
Finding Images
Finding Images
The Docker Hub
Searching for images
Docker Hub and docker registry REST API
Summary
6
Creating Images
Creating Images
Dockerfile instructions
Using Dockerfiles
Summary
7
Running Containers
Running Containers
Runtime modes - detached and foreground
Identifying images and containers
Overriding default commands from Dockerfile
Executing arbitrary commands with exec
Monitoring containers
Container exit codes and restart policies
Runtime constraints on resources
Docker Swarm mode
Summary
8
Publishing Images
Publishing Images
Publishing images
Webhooks and automated builds
Summary
9
Using Docker in Development
Using Docker in Development
Using Docker with Maven
Spring Boot application in Docker container
Packaging Angular.js application
Summary
More Resources
More Resources
Official documentation
Awesome Docker
Training

Chapter 1. Introduction to Docker

At the beginning, Docker was created as an internal tool by a Platform as a Service company called dotCloud. Later on, in March 2013, it was released as open source. Apart from the Docker Inc. team, which is the main sponsor, there are some other big names contributing to the tool—Red Hat, IBM, Microsoft, Google, and Cisco Systems, just to name a few. Software development today needs to be agile and react quickly to changes. We use methodologies such as Scrum, estimate our work in story points, and attend the daily stand-ups. But what about preparing our software for shipment and the deployment? Let's see how Docker fits into that scenario and can help us to be agile.

In this chapter, we will cover the following topics:

  • The basic idea behind Docker

  • A difference between virtualization and containerization

  • Benefits of using Docker

  • Components available to install

We will begin with the basic idea behind this wonderful tool.

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