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# Contributing

When contributing to this repository, please first discuss the change you wish to make via issue,
email, or any other method with the owners of this repository before making a change.

Please note we have a [code of conduct](CODE_OF_CONDUCT.md), please follow it in all your
interactions with the project.

## Pull Request Process
1. Ensure you signed all your commits with Developer Certificate of Origin (DCO).
2. Ensure any install or build dependencies are removed before the end of the layer when doing a
   build.
3. Update the README.md with details of changes to the interface, this includes new environment
   variables, exposed ports, useful file locations and container parameters.
4. Increase the version numbers in any examples files and the README.md to the new version that this
   Pull Request would represent. The versioning scheme we use is [SemVer](http://semver.org/).
5. You may merge the Pull Request in once you have the sign-off of two other developers, or if you
   do not have permission to do that, you may request the second reviewer to merge it for you.

## Sign your work

We use the Developer Certificate of Origin (DCO) as a additional safeguard
for the CodiMD project. This is a well established and widely used
mechanism to assure contributors have confirmed their right to license
their contribution under the project's license.
Please read [contribute/developer-certificate-of-origin][dcofile].
If you can certify it, then just add a line to every git commit message:

````
  Signed-off-by: Random J Developer <random@developer.example.org>
````

Use your real name (sorry, no pseudonyms or anonymous contributions).
If you set your `user.name` and `user.email` git configs, you can sign your
commit automatically with `git commit -s`. You can also use git [aliases](https://git-scm.com/book/tr/v2/Git-Basics-Git-Aliases)
like `git config --global alias.ci 'commit -s'`. Now you can commit with
`git ci` and the commit will be signed.