(Previously known as Fig)

Compose is a tool for defining and running multi-container applications with Docker. With Compose, you define a multi-container application in a single file, then spin your application up in a single command which does everything that needs to be done to get it running.

Compose is great for development environments, staging servers, and CI. We don't recommend that you use it in production yet.

Using Compose is basically a three-step process.

1. Define your app's environment with a Dockerfile so it can be reproduced anywhere.
2. Define the services that make up your app in docker-compose.yml so they can be run together in an isolated environment:
3. Lastly, run docker-compose up and Compose will start and run your entire app.

A docker-compose.yml looks like this:

web:
  build: .
  ports:
   - "5000:5000"
  volumes:
   - .:/code
  links:
   - redis
redis:
  image: redis

Compose has commands for managing the whole lifecycle of your application:

• Start, stop and rebuild services
• View the status of running services
• Stream the log output of running services
• Run a one-off command on a service

• Full documentation is available on Docker's website.
• If you have any questions, you can talk in real-time with other developers in the #docker-compose IRC channel on Freenode. Click here to join using IRCCloud.

Want to help build Compose? Check out our contributing documentation.