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.github/CONTRIBUTING.md

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+## Contributing
+
+Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
+
+Contributions to this project are [released](https://docs.github.com/en/github/site-policy/github-terms-of-service#6-contributions-under-repository-license)
+to the public under the [project's open source license](LICENSE).
+
+## Submitting a pull request
+
+1. [Fork](https://github.com/crazy-max/ghaction-setup-docker/fork) and clone the repository
+2. Configure and install the dependencies: `yarn install`
+3. Create a new branch: `git checkout -b my-branch-name`
+4. Make your changes
+5. Format code and build javascript artifacts: `docker buildx bake pre-checkin`
+6. Validate all code has correctly formatted and built: `docker buildx bake validate`
+7. Push to your fork and [submit a pull request](https://github.com/crazy-max/ghaction-setup-docker/compare)
+8. Pat your self on the back and wait for your pull request to be reviewed and merged.
+
+Here are a few things you can do that will increase the likelihood of your pull request being accepted:
+
+- Make sure the `README.md` and any other relevant **documentation are kept up-to-date**.
+- We try to follow [SemVer v2.0.0](https://semver.org/). Randomly breaking public APIs is not an option.
+- Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as **separate pull requests**.
+- Write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+
+## Resources
+
+- [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)
+- [Using Pull Requests](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests)
+- [GitHub Help](https://docs.github.com/en)