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# Contributing to Compose
Compose is a part of the Docker project, and follows the same rules and
principles. Take a read of [Docker's contributing guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md)
to get an overview.
## TL;DR
Pull requests will need:
- Tests
- Documentation
- [To be signed off](https://github.com/docker/docker/blob/master/CONTRIBUTING.md#sign-your-work)
- A logical series of [well written commits](https://github.com/alphagov/styleguides/blob/master/git.md)
## Development environment
If you're looking contribute to Compose
but you're new to the project or maybe even to Python, here are the steps
that should get you started.
1. Fork [https://github.com/docker/compose](https://github.com/docker/compose)
to your username.
2. Clone your forked repository locally `git clone git@github.com:yourusername/compose.git`.
3. You must [configure a remote](https://help.github.com/articles/configuring-a-remote-for-a-fork/) for your fork so that you can [sync changes you make](https://help.github.com/articles/syncing-a-fork/) with the original repository.
4. Enter the local directory `cd compose`.
5. Set up a development environment by running `python setup.py develop`. This
will install the dependencies and set up a symlink from your `docker-compose`
executable to the checkout of the repository. When you now run
`docker-compose` from anywhere on your machine, it will run your development
version of Compose.
## Submitting a pull request
See Docker's [basic contribution workflow](https://docs.docker.com/project/make-a-contribution/#the-basic-contribution-workflow) for a guide on how to submit a pull request for code or documentation.
## Running the test suite
Use the test script to run linting checks and then the full test suite against
different Python interpreters:
$ script/test
Tests are run against a Docker daemon inside a container, so that we can test
against multiple Docker versions. By default they'll run against only the latest
Docker version - set the `DOCKER_VERSIONS` environment variable to "all" to run
against all supported versions:
$ DOCKER_VERSIONS=all script/test
Arguments to `script/test` are passed through to the `nosetests` executable, so
you can specify a test directory, file, module, class or method:
$ script/test tests/unit
$ script/test tests/unit/cli_test.py
$ script/test tests.integration.service_test
$ script/test tests.integration.service_test:ServiceTest.test_containers
## Finding things to work on
We use a [Waffle.io board](https://waffle.io/docker/compose) to keep track of specific things we are working on and planning to work on. If you're looking for things to work on, stuff in the backlog is a great place to start.
For more information about our project planning, take a look at our [GitHub wiki](https://github.com/docker/compose/wiki).
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