Either if you are a Developer or a System Administrator, Docker is about to be a must know and must have in your daily toolbox.When a new technology arises and you want to get savvy on it, you can choose between two roads: diving into hundreds of not so well documented and often outdated on-line tutorials or going for the right way and choose a good book like this that guides and helps you in the process. This book it's written with this kind of scenario in mind, going straight to the point that matters, in order to help and speed up your learning curve.On chapter 1 you'll learn what it's docker and how can you benefit from using it on your daily work. If you are a developer who wants to start using this technology the book guides you through a series of chapters that discuses all you need to know to get confident with it (chapters 1 to 4). In the other hand if you are a system administrator, once you know the basis from the 4th first chapters, you only need to keep walking your way across the chapter 5 to get all you need to know to deploy and maintain you own private Docker infrastructure.From that point both developers and System Administrators still have chapters 6 to 11 to get deeper knowledge of more areas of expertise regarding Docker ecosystem.Summarizing, if you buy this book you'll get a very comprehensive and easy way to master Docker technology in a very short time.

This is a great reference book for cloud developers, from novice to expert. It covers nearly all features with docker container, followed by a hands-on example.It effectively demonstrates the advantages of running multiple containers within a virtual machine instead of spinning up a virtual machine for every application.The book is well written in simple terms and could be easily used for preparing presentation about docker features.Most recommended for container enthusiasts.

I truly enjoyed this book. Pretty easy reading for the most part. After reading this book I went from 0 to being able to have an educated conversation with others about docker, and dare I say it maybe get a container or two running! (Haven't done it yet, as I haven't had the time).The only knock from me on this book is the part about security. I felt like that chapter could've been better.

Is not bad, direct, no verbose, handy, easy to find all the topics and doubts. Maybe I miss a little some more examples with the docker run command line, because to be honest just appear a couple of times, which is quite annoying, but ok.

At the beginning of November 2015, Docker 1.9 was released and with it multi-host networking was introduced. At the same time, Swarm finally reached a stable state that guaranteed it the label of production-ready. The DockerCon that took place in Barcelona was a success, confirming 2015 has been a great year for that blue whale. The strong impact containers had on the IT world is reflected on the one hand by the many companies investing on it, and on the other by the humongous amount of blog posts and books dedicated to it. In a scenario where some must-have title has already been released (see the bottom for suggested titles), Learning Docker places itself as an introductory text that targets professionals and enthusiasts interested in getting a quick taste of this new technology.Docker is one of those technologies that I am particularly interested in. I have been reading a lot about it, from the official documentation up to blogs, passing through that horde of books that made it up to the Amazon’s shelves. Getting through these 200 pages took me less than two days, mainly because none of the topics covered was new to me. But let’s dive into it!The very first thing that I have noticed about this title is the complete lack of background about what Docker is and, mainly, how it works under the hood. I did not find a single paragraph describing what a union mount is. Union mounts are one of the many key concepts of Docker that are not explained at all. Another concept that is not explained at all is, for example, that of the build context. Mind, the term build context appears all over the book, but the reader is not told what it is. The examples that show how to build an image use it without making it clear that the build context is that lone dot at the very end of the command. Concepts such as name spaces and cgroups are, instead, briefly described at the very end of the book, in the chapter dedicated to security.Another thing I did not appreciate much is the quality of the diagrams used to present the concepts being explained. They are colorful yes, but they could have been definitely better. But diagrams apart, do we really need screenshots to guide us through the signup form of the Docker Hub?The examples presented by the authors are very simple. Throughout the book there is not a single real-world example, nothing that gets beyond the containers’ equivalent of an Hello World! in C. Still, this is a very beginners’ book. This also means that topics such as Kubernetes or Mesos are not touched at all.Tying it all up, a very beginners’ book that I did not like but that someone completely new to the subject could find easy to read to get started. Still, the book can’t keep up with the competition: beginners should prefer passing through each and every page of the official documentation and, optionally, Turnbull’s The Docker Book.Suggested readings:The Docker Book: an user friendly, concise introduction to Docker. While it does not cover many advanced topics, it’s by far the best covering the basics.Docker Hands on: while not helpful to beginners, it offers the reader many advanced topics that can’t be found anywhere else.Docker: Up and Running: a very good text that focuses on advanced topics, mainly containers security.As usual, you can find more reviews on my personal blog: http://books.lostinmalloc.com. Feel free to pass by and share your thoughts!