doc: add contributions introduction

Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>
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Iker Pedrosa 2023-03-14 16:44:33 +01:00 committed by Serge Hallyn
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# Introduction
## Git and Github
We recommend you to get familiar with the
[git](https://guides.github.com/introduction/git-handbook) and
[Github](https://guides.github.com) workflows before posting any changes.
### Set up in a nut shell
The following steps describe the process in a nut shell to provide you a basic
template:
* Create an account on [GitHub](https://github.com)
* Fork the [shadow repository](https://github.com/shadow-maint/shadow)
* Clone the shadow repository
```
git clone https://github.com/shadow-maint/shadow.git
```
* Add your fork as an extra remote
```
git remote add $ghusername git@github.com:$ghusername/shadow.git
```
* Setup your name contact e-mail that you want to use for the development
```
git config user.name "John Smith"
git config user.email "john.smith@home.com"
```
**Note**: this will setup the user information only for this repository. You
can also add `--global` switch to the `git config` command to setup these
options globally and thus making them available in every git repository.
* Create a working branch
```
git checkout -b my-changes
```
* Commit changes
```
vim change-what-you-need
git commit -s
```
Check
[the kernel patches guide](https://www.kernel.org/doc/html/v4.14/process/submitting-patches.html#describe-your-changes)
to get an idea on how to write a good commit message.
* Push your changes to your GitHub repository
```
git push $ghusername my-changes --force
```
* Open a Pull Request against shadow project by clicking on the link provided
in the output of the previous step
* Make sure that all Continuous Integration checks are green and wait review
## Internal guidelines
Additionally, you should also check the following internal guidelines to
understand the project's development model:
* [Build & install](build_install.md)
* [Coding style](coding_style.md)
* [Tests](tests.md)
* [Continuous Integration](CI.md)
* [Releases](releases.md)
* [License](license.md)