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→Introduction
==Introduction==
Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create and start all the services from your configuration.
'''Multiple isolated environments on a single host'''<br>
Compose uses a project name to isolate environments from each other. You can make use of this project name in several different contexts:
* on a dev host, to create multiple copies of a single environment, such as when you want to run a stable copy for each feature branch of a project
* on a CI server, to keep builds from interfering with each other, you can set the project name to a unique build number
'''Development environments'''<br>
When you’re developing software, the ability to run an application in an isolated environment and interact with it is crucial. The Compose command line tool can be used to create the environment and interact with it.
* The Compose file provides a way to document and configure all of the application’s service dependencies (databases, queues, caches, web service APIs, etc). Using the Compose command line tool you can create and start one or more containers for each dependency with a single command (docker-compose up).
* Together, these features provide a convenient way for developers to get started on a project. Compose can reduce a multi-page “developer getting started guide” to a single machine readable Compose file and a few commands.
'''Automated testing environments'''<br>
An important part of any Continuous Deployment or Continuous Integration process is the automated test suite. Automated end-to-end testing requires an environment in which to run tests. Compose provides a convenient way to create and destroy isolated testing environments for your test suite. By defining the full environment in a Compose file, you can create and destroy these environments in just a few commands:
Source: https://docs.docker.com/compose/overview/
==Docker compose vs docker stack==
