Nicolas De Loof
f093ce2106
- TestExposeRange keeps its regression link (#13378), the invariant being simply that up accepts a port range in expose. - TestUpContainerNameConflict interpolates a project-scoped container_name instead of the fixture's global 'test', so parallel runs cannot collide on it. - TestIPC demonstrates the CLI() escape hatch: the external container the 'container:' mode points at is created eagerly before the steps, so its id is available to the declarative checks. (Runs only in CI: ipc container: mode is rejected by Docker Desktop and dind daemons — 'restricted host mount' — for the legacy test as well.) - wait scenarios observe which services exited instead of trusting the command's silence; TestWaitOnInfinity stays legacy, the DSL has no notion of a still-running command. The wait fixture stays for it; ipc-test and container_name fixtures are removed. Signed-off-by: Nicolas De Loof <[email protected]>
Table of Contents
Docker Compose
Docker Compose is a tool for running multi-container applications on Docker
defined using the Compose file format.
A Compose file is used to define how one or more containers that make up
your application are configured.
Once you have a Compose file, you can create and start your application with a
single command: docker compose up.
Note
: About Docker Swarm Docker Swarm used to rely on the legacy compose file format but did not adopt the compose specification so is missing some of the recent enhancements in the compose syntax. After acquisition by Mirantis swarm isn't maintained by Docker Inc, and as such some Docker Compose features aren't accessible to swarm users.
Where to get Docker Compose
Windows and macOS
Docker Compose is included in Docker Desktop for Windows and macOS.
Linux
You can download Docker Compose binaries from the release page on this repository.
Rename the relevant binary for your OS to docker-compose and copy it to $HOME/.docker/cli-plugins
Or copy it into one of these folders to install it system-wide:
/usr/local/lib/docker/cli-pluginsOR/usr/local/libexec/docker/cli-plugins/usr/lib/docker/cli-pluginsOR/usr/libexec/docker/cli-plugins
(might require making the downloaded file executable with chmod +x)
Quick Start
Using Docker Compose is a three-step process:
- Define your app's environment with a
Dockerfileso it can be reproduced anywhere. - Define the services that make up your app in
compose.yamlso they can be run together in an isolated environment. - Lastly, run
docker compose upand Compose will start and run your entire app.
A Compose file looks like this:
services:
web:
build: .
ports:
- "5000:5000"
volumes:
- .:/code
redis:
image: redis
Contributing
Want to help develop Docker Compose? Check out our contributing documentation.
If you find an issue, please report it on the issue tracker.
Legacy
The Python version of Compose is available under the v1 branch.