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Docker Certified Associate (DCA): Exam Guide

You're reading from   Docker Certified Associate (DCA): Exam Guide Enhance and validate your Docker skills by gaining Docker certification

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781839211898
Length 612 pages
Edition 1st Edition
Tools
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Author (1):
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Francisco Javier Ramírez Urea Francisco Javier Ramírez Urea
Author Profile Icon Francisco Javier Ramírez Urea
Francisco Javier Ramírez Urea
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Toc

Table of Contents (22) Chapters Close

Preface 1. Section 1 - Key Container Concepts
2. Modern Infrastructures and Applications with Docker FREE CHAPTER 3. Building Docker Images 4. Running Docker Containers 5. Container Persistency and Networking 6. Deploying Multi-Container Applications 7. Introduction to Docker Content Trust 8. Section 2 - Container Orchestration
9. Introduction to Orchestration 10. Orchestration Using Docker Swarm 11. Orchestration Using Kubernetes 12. Section 3 - Docker Enterprise
13. Introduction to the Docker Enterprise Platform 14. Universal Control Plane 15. Publishing Applications in Docker Enterprise 16. Implementing an Enterprise-Grade Registry with DTR 17. Section 4 - Preparing for the Docker Certified Associate Exam
18. Summarizing Important Concepts 19. Mock Exam Questions and Final Notes 20. Assessments 21. Other Books You May Enjoy

Integrating and automating image workflow

DTR provides built-in features aligned with CI/CD pipeline construction logic. We will have webhooks that can be triggered to inform other applications or processes regarding certain events, such as a completed image scan or a new image/tag arrival. We also have image promotions. This feature will retag images between repositories. The following diagram shows a simple workflow for building, distributing, and executing an application. We are including some of the features provided by DTR:

This workflow represents how to implement DTR in several development stages. Promoting a scanned image for testing will ensure its security before going to production in this example. Toward the end of this section, we will also be reviewing image mirroring. This is a feature used to share images between different DTR environments.

Image promotion

DTR allows us to automatically promote images between repositories. Promotion is based on repository-defined policies...

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