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

Automating your desktop and CI/CD with Docker Compose

Docker Compose allows us to easily develop on our own laptops. DevOps teams will provide complete application stack files, docker-compose.yaml files, along with all the required components and configurations. Developers do not have to learn how all the components work. They can focus on the component they are developing because the rest of the components will run automatically thanks to docker-compose.

We can use Docker Compose on a Continuous Integration/Continuous Deployment (CI/CD) pipeline, building all the components at once.

Docker Compose helps us build all the application components at the development stage, but we can also use this tool to run all the components together. CI/CD orchestrators will execute docker-compose files at different stages.

With the described steps and variables, it is easy to imagine how to implement a pipeline starting at the development stages and ending with the application in production. We would...