Book Image

Docker on Windows - Second Edition

By : Elton Stoneman
Book Image

Docker on Windows - Second Edition

By: Elton Stoneman

Overview of this book

Docker on Windows, Second Edition teaches you all you need to know about Docker on Windows, from the 101 to running highly-available workloads in production. You’ll be guided through a Docker journey, starting with the key concepts and simple examples of .NET Framework and .NET Core apps in Docker containers on Windows. Then you’ll learn how to use Docker to modernize the architecture and development of traditional ASP.NET and SQL Server apps. The examples show you how to break up legacy monolithic applications into distributed apps and deploy them to a clustered environment in the cloud, using the exact same artifacts you use to run them locally. You’ll see how to build a CI/CD pipeline which uses Docker to compile, package, test and deploy your applications. To help you move confidently to production, you’ll learn about Docker security, and the management and support options. The book finishes with guidance on getting started with Docker in your own projects. You’ll walk through some real-world case studies for Docker implementations, from small-scale on-premises apps to very large-scale apps running on Azure.
Table of Contents (18 chapters)
Free Chapter
1
Section 1: Understanding Docker and Windows Containers
6
Section 2: Designing and Building Containerized Solutions
10
Section 3: Preparing for Docker in Production
14
Section 4: Getting Started on Your Container Journey

Understanding registries and repositories

You download an image from a registry using the docker image pull command. When you run the command, the Docker Engine connects to the registry, authenticates if it needs to and pulls the image down. The pull process downloads all the image layers and stores them in the local image cache on the machine. Containers can only be run from images which are available in the local image cache, so unless they're built locally, they need to be pulled first.

One of the earliest commands you run when you get started with Docker on Windows will be something simple, like this example from Chapter 2, Packaging and Running Applications as Docker Containers:

> docker container run dockeronwindows/ch02-powershell-env:2e

Name Value
---- -----
ALLUSERSPROFILE C:\ProgramData...