d7b0b2bd7d
The `alpha watch` command current "attaches" to an already-running Compose project, so it's necessary to run something like `docker compose up --wait` first. Now, we'll do the equivalent of an `up --build` before starting the watch, so that we know the project is up-to-date and running. Additionally, unlike an interactive `up`, the services are not stopped when `watch` exits (e.g. via `Ctrl-C`). This prevents the need to start from scratch each time the command is run - if some services are already running and up-to-date, they can be used as-is. A `down` can always be used to destroy everything, and we can consider introducing a flag like `--down-on-exit` to `watch` or changing the default. Signed-off-by: Milas Bowman <milas.bowman@docker.com>
Table of Contents
Docker Compose v2
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.
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
docker-compose.ymlso 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.