Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
The Ultimate Docker Container Book

You're reading from   The Ultimate Docker Container Book Build, test, ship, and run containers with Docker and Kubernetes

Arrow left icon
Product type Paperback
Published in Aug 2023
Publisher Packt
ISBN-13 9781804613986
Length 626 pages
Edition 3rd Edition
Tools
Concepts
Arrow right icon
Author (1):
Arrow left icon
Dr. Gabriel N. Schenker Dr. Gabriel N. Schenker
Author Profile Icon Dr. Gabriel N. Schenker
Dr. Gabriel N. Schenker
Arrow right icon
View More author details
Toc

Table of Contents (26) Chapters Close

Preface 1. Part 1:Introduction
2. Chapter 1: What Are Containers and Why Should I Use Them? FREE CHAPTER 3. Chapter 2: Setting Up a Working Environment 4. Part 2:Containerization Fundamentals
5. Chapter 3: Mastering Containers 6. Chapter 4: Creating and Managing Container Images 7. Chapter 5: Data Volumes and Configuration 8. Chapter 6: Debugging Code Running in Containers 9. Chapter 7: Testing Applications Running in Containers 10. Chapter 8: Increasing Productivity with Docker Tips and Tricks 11. Part 3:Orchestration Fundamentals
12. Chapter 9: Learning about Distributed Application Architecture 13. Chapter 10: Using Single-Host Networking 14. Chapter 11: Managing Containers with Docker Compose 15. Chapter 12: Shipping Logs and Monitoring Containers 16. Chapter 13: Introducing Container Orchestration 17. Chapter 14: Introducing Docker Swarm 18. Chapter 15: Deploying and Running a Distributed Application on Docker Swarm 19. Part 4:Docker, Kubernetes, and the Cloud
20. Chapter 16: Introducing Kubernetes 21. Chapter 17: Deploying, Updating, and Securing an Application with Kubernetes 22. Chapter 18: Running a Containerized Application in the Cloud 23. Chapter 19: Monitoring and Troubleshooting an Application Running in Production 24. Index 25. Other Books You May Enjoy

Using a .dockerignore file

The .dockerignore file is a text file that tells Docker to ignore certain files and directories when building a Docker image from a Dockerfile. This is similar to how the .gitignore file works in Git.

The primary benefit of using a .dockerignore file is that it can significantly speed up the Docker build process. When Docker builds an image, it first sends all of the files in the current directory (known as the “build context”) to the Docker daemon. If this directory contains large files or directories that aren’t necessary for building the Docker image (such as log files, local environment variables, cache files, etc.), these can be ignored to speed up the build process.

Moreover, using a .dockerignore file can help to improve security and maintain clean code practices. For instance, it helps prevent potentially sensitive information (such as .env files containing private keys) from being included in the Docker image. It can also...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime