Book Image

The Docker Workshop

By : Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda
5 (2)
Book Image

The Docker Workshop

5 (2)
By: Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda

Overview of this book

No doubt Docker Containers are the future of highly-scalable software systems and have cost and runtime efficient supporting infrastructure. But learning it might look complex as it comes with many technicalities. This is where The Docker Workshop will help you. Through this workshop, you’ll quickly learn how to work with containers and Docker with the help of practical activities.? The workshop starts with Docker containers, enabling you to understand how it works. You’ll run third party Docker images and also create your own images using Dockerfiles and multi-stage Dockerfiles. Next, you’ll create environments for Docker images, and expedite your deployment and testing process with Continuous Integration. Moving ahead, you’ll tap into interesting topics and learn how to implement production-ready environments using Docker Swarm. You’ll also apply best practices to secure Docker images and to ensure that production environments are running at maximum capacity. Towards the end, you’ll gather skills to successfully move Docker from development to testing, and then into production. While doing so, you’ll learn how to troubleshoot issues, clear up resource bottlenecks and optimize the performance of services. By the end of this workshop, you’ll be able to utilize Docker containers in real-world use cases.
Table of Contents (17 chapters)
Preface

Summary

We started this chapter by defining a normal Docker build and creating a simple Golang Docker image using the normal Docker build process. Then we observed the size of the resulting Docker image and discussed how a minimal-sized Docker image can speed up the build and deployment times for Docker containers and enhance security by reducing the attack surface.

We then used the builder pattern to create minimal-sized Docker images, utilizing two Dockerfiles and a shell script in this process to create the image. We explored multi-stage Docker builds—a new feature introduced to Docker in version 17.05 that can help to eliminate the operational burden of having to maintain two Dockerfiles and a shell script. Finally, we discussed the best practices for writing Dockerfiles and how these best practices can ensure reduced build time, reduced image size, and increased security, while increasing the maintainability of the Docker image.

In the next chapter, we will...