Book Image

The Docker Workshop

By : Vincent Sesto, Onur Yılmaz, Sathsara Sarathchandra, Aric Renzo, Engy Fouda
Book Image

The Docker Workshop

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

In this chapter, we discussed how we can use a Dockerfile to create our own custom Docker images. First, we discussed what is a Dockerfile and the syntax of a Dockerfile. We then discussed some common Docker directives, including the FROM, LABEL, RUN, CMD, and ENTRYPOINT directives. Then, we created our first Dockerfile with the common directives that we learned.

In the next section, we focused on building Docker images. We discussed multiple areas in depth regarding Docker images, including the layered filesystem of Docker images, the context in Docker builds, and the use of the cache during the Docker build process. Then, we discussed more advanced Dockerfile directives, including the ENV, ARG, WORKDIR, COPY, ADD, USER, VOLUME, EXPOSE, HEALTHCHECK, and ONBUILD directives.

In the next chapter, we will discuss what a Docker registry is, look at private and public Docker registries, and learn how we can publish Docker images to Docker registries.