Book Image

Docker Certified Associate (DCA): Exam Guide

By : Francisco Javier Ramírez Urea
Book Image

Docker Certified Associate (DCA): Exam Guide

By: Francisco Javier Ramírez Urea

Overview of this book

Developers have changed their deployment artifacts from application binaries to container images, and they now need to build container-based applications as containers are part of their new development workflow. This Docker book is designed to help you learn about the management and administrative tasks of the Containers as a Service (CaaS) platform. The book starts by getting you up and running with the key concepts of containers and microservices. You'll then cover different orchestration strategies and environments, along with exploring the Docker Enterprise platform. As you advance, the book will show you how to deploy secure, production-ready, container-based applications in Docker Enterprise environments. Later, you'll delve into each Docker Enterprise component and learn all about CaaS management. Throughout the book, you'll encounter important exam-specific topics, along with sample questions and detailed answers that will help you prepare effectively for the exam. By the end of this Docker containers book, you'll have learned how to efficiently deploy and manage container-based environments in production, and you will have the skills and knowledge you need to pass the DCA exam.
Table of Contents (22 chapters)
1
Section 1 - Key Container Concepts
8
Section 2 - Container Orchestration
12
Section 3 - Docker Enterprise
17
Section 4 - Preparing for the Docker Certified Associate Exam
Running Docker Containers

This chapter is dedicated to the Docker command line. We have run some containers in the previous chapters, but we did not go into detail regarding the arguments and options used.

In this chapter, we will talk about different Docker objects, such as images, containers, and volumes, and their associated actions. Not all objects will have the same features and, consequently, they will not have the same actions and arguments.

Remember that image building is based on container execution. Each layer is the result of executing commands on a container that is automatically "committed" in a Docker node's filesystem. All these layers, when grouped together, constitute an image.

In this chapter, we will cover the following topics:

  • Reviewing the Docker command line in depth
  • Learning about Docker objects
  • Running containers
  • Interacting with containers...