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Docker Compose

Docker 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.

Docker Compose

Key Features​

  • Multiple isolated environments: You can run multiple environments of a Compose application on a single host.
  • Preserve volume data: Compose preserves all volumes used by your services.
  • Only recreate changed containers: Compose caches the configuration used to create a container. When you restart a service that has not changed, Compose re-uses the existing containers.

Basic Workflow​

  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. Run docker compose up and the Docker compose command starts and runs your entire app.