# Contributing

## Pull requests:

Changes to this project should be proposed as pull requests on Github
at: <https://github.com/lxc/distrobuilder>

Proposed changes will then go through code review there and once acked,
be merged in the main branch.


## License and copyright:

By default, any contribution to this project is made under the Apache
2.0 license.

The author of a change remains the copyright holder of their code
(no copyright assignment).


## Developer Certificate of Origin:

To improve tracking of contributions to this project we use the DCO 1.1
and use a "sign-off" procedure for all changes going into the branch.

The sign-off is a simple line at the end of the explanation for the
commit which certifies that you wrote it or otherwise have the right
to pass it on as an open-source contribution.

> Developer Certificate of Origin
> Version 1.1
>
> Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
> 660 York Street, Suite 102,
> San Francisco, CA 94110 USA
>
> Everyone is permitted to copy and distribute verbatim copies of this
> license document, but changing it is not allowed.
>
> Developer's Certificate of Origin 1.1
>
> By making a contribution to this project, I certify that:
>
> (a) The contribution was created in whole or in part by me and I
>     have the right to submit it under the open source license
>     indicated in the file; or
>
> (b) The contribution is based upon previous work that, to the best
>     of my knowledge, is covered under an appropriate open source
>     license and I have the right under that license to submit that
>     work with modifications, whether created in whole or in part
>     by me, under the same open source license (unless I am
>     permitted to submit under a different license), as indicated
>     in the file; or
>
> (c) The contribution was provided directly to me by some other
>     person who certified (a), (b) or (c) and I have not modified
>     it.
>
> (d) I understand and agree that this project and the contribution
>     are public and that a record of the contribution (including all
>     personal information I submit with it, including my sign-off) is
>     maintained indefinitely and may be redistributed consistent with
>     this project or the open source license(s) involved.

An example of a valid sign-off line is:

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

Use your real name and a valid e-mail address.
Sorry, no pseudonyms or anonymous contributions are allowed.

We also require each commit be individually signed-off by their author,
even when part of a larger set. You may find `git commit -s` useful.
