Book Image

Docker Cookbook - Second Edition

By : Ken Cochrane, Jeeva S. Chelladhurai, Neependra K Khare
2 (1)
Book Image

Docker Cookbook - Second Edition

2 (1)
By: Ken Cochrane, Jeeva S. Chelladhurai, Neependra K Khare

Overview of this book

Docker is an open source tool used for creating, deploying, and running applications using containers. With more than 100 self-contained tutorials, this book examines common pain points and best practices for developers building distributed applications with Docker. Each recipe in this book addresses a specific problem and offers a proven, best practice solution with insights into how it works, so that you can modify the code and configuration files to suit your needs. The Docker Cookbook begins by guiding you in setting up Docker in different environments and explains how to work with its containers and images. You’ll understand Docker orchestration, networking, security, and hosting platforms for effective collaboration and efficient deployment. The book also covers tips and tricks and new Docker features that support a range of other cloud offerings. By the end of this book, you’ll be able to package and deploy end-to-end distributed applications with Docker and be well-versed with best practice solutions for common development problems.
Table of Contents (13 chapters)

Exporting an image

Let's say you have a customer who has very strict policies that do not allow them to use images from the public domain. In such cases, you can share one or more images through tarballs, which can then later be imported on another system.

The docker image save command lets you save or export images as tarballs. The command syntax is as follows:

docker image save [-o|--output]=file.tar IMAGE [IMAGE...]

In this recipe, we will learn how to export an image using the docker image save command.

Getting ready

Before you begin, first pull or import one or more Docker images on the Docker host.

How to do it...

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