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The Docker Workshop

You're reading from   The Docker Workshop Learn how to use Docker containers effectively to speed up the development process

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Product type Paperback
Published in Oct 2020
Publisher Packt
ISBN-13 9781838983444
Length 792 pages
Edition 1st Edition
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Concepts
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Authors (5):
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Engy Fouda Engy Fouda
Author Profile Icon Engy Fouda
Engy Fouda
Onur Yılmaz Onur Yılmaz
Author Profile Icon Onur Yılmaz
Onur Yılmaz
Sathsara Sarathchandra Sathsara Sarathchandra
Author Profile Icon Sathsara Sarathchandra
Sathsara Sarathchandra
Aric Renzo Aric Renzo
Author Profile Icon Aric Renzo
Aric Renzo
Vincent Sesto Vincent Sesto
Author Profile Icon Vincent Sesto
Vincent Sesto
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Toc

Table of Contents (17) Chapters Close

Preface
1. Running My First Docker Container 2. Getting Started with Dockerfiles FREE CHAPTER 3. Managing Your Docker Images 4. Multi-Stage Dockerfiles 5. Composing Environments with Docker Compose 6. Introduction to Docker Networking 7. Docker Storage 8. CI/CD Pipeline 9. Docker Swarm 10. Kubernetes 11. Docker Security 12. Best Practices 13. Monitoring Docker Metrics 14. Collecting Container Logs 15. Extending Docker with Plugins Appendix

Service Dependency

Docker Compose runs and manages multi-container applications defined in docker-compose.yaml files. Although the containers are designed as independent microservices, creating services that depend on each other is highly expected. For instance, let's assume you have a two-tier application with database and backend components, such as a PostgreSQL database and a Java backend. The Java backend component requires PostgreSQL to be up and running since it should connect to the database to run the business logic. Therefore, you could need to define the dependency between the services of the multi-container applications. With Docker Compose, it is possible to control the order of the startup and shutdown of the services.

Say you have a three-container application with the following docker-compose.yaml file:

version: "3"
services:
  init:
    image: busybox
  pre:
    image: busybox
 &...
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