Add contributing guide

README.md

@@ -23,6 +23,13 @@ Documentation on Theodolite itself as well as regarding its benchmarking method
 * The source code of Theodolite's SLO checkers are located in [`slo-checker`](slo-checker).
 * The documentation, which is hosted on [theodolite.rocks](https://www.theodolite.rocks), is located in [`docs`](docs).
 
+## Contributing
+
+We are happy to accept any kind of contributions to Theodolite.
+This includes reporting any issues you find using Theodolite, bug fixes and improvements as well as integrating your research within the project.
+
+See our website to [start contributing](https://www.theodolite.rocks/development/).
+
 ## How to Cite
 
 If you use Theodolite, please cite

buildimages/README.md

+# Theodolite Build Images
+
+This directory contains some Dockerfiles for images required for Theodolite build infrastructure.

docs/development/index.md

 ---
-title: Development
+title: Contributing
 has_children: true
 nav_order: 10
 ---
+
+# Contributing
+
+Theodolite is open-source research software. We welcome everyone to contribute to this project.
+Contributions are not limited to code contributions, instead we welcome and recognize everything concerning:
+
+* Raising issues, questions and suggestions for using Theodolite
+* Fixing bugs or implementing new features
+* Improving the documentation
+* Using Theodolite as part of your (not necessarily scientific) research
+* Reporting on your scalability evaluations with Theodolite
+
+## Start Contributing
+
+If you have bug reports, feature requests, questions or suggestions, you may create a [GitHub issue](https://github.com/cau-se/theodolite/issues) or directly [contact Theodolite's maintainers](project-info).
+You can also create a [GitHub pull request](https://github.com/cau-se/theodolite/pulls) if you have already implemented bug fixes and improvements.
+
+If you would like to get more involved in Theodolite's project development and maintenance, you may contact us as well so we can set you up an account for [our internal GitLab](project-info#project-management).
+
+## Internal Project Structure
+
+Theodolite is organized as a monorepo containing multiple largely independent modules in subdirectories.
+See the project's [`README.md`](https://github.com/cau-se/theodolite/blob/main/README.md#project-structure) for an overview of all modules.
+Each module directory provides a dedicated `README.md` file describing how to build, test, package,... the corresponding module.

docs/development/release-process.md

 ---
 title: Release Process
 has_children: false
-parent: Development
+parent: Contributing
 nav_order: 1
 ---
 

docs/project-info.md

@@ -15,7 +15,20 @@ You might also want to raise an issue on [GitHub](http://github.com/cau-se/theod
 
 ## Project Management
 
-Theodolite's internal development including issue boards, merge requests and extensive CI pipelines is tracked in our [internal GitLab](https://git.se.informatik.uni-kiel.de/she/theodolite). We provide a public mirror on GitHub, [cau-se/theodolite](http://github.com/cau-se/theodolite), where we are also happy to welcome issues and pull requests.
+Theodolite's internal development including issue boards, merge requests and extensive CI pipelines is tracked in our [internal GitLab](https://git.se.informatik.uni-kiel.de/she/theodolite).
+While all internal development is publicly accessible, contributing requires an account to be set up.
+To ease contribution, we provide a public mirror on GitHub, [cau-se/theodolite](http://github.com/cau-se/theodolite), where we are also happy to welcome issues and pull requests.
+Also releases are published via GitHub. See the following table for an overview:
+
+| Project management | Public GitHub | Internal GitLab |
+|:---|:---|:---|
+| Source code | [GitHub](https://github.com/cau-se/theodolite) | [GitLab](https://git.se.informatik.uni-kiel.de/she/theodolite) |
+| Issue Tracking | [GitHub Issues](https://github.com/cau-se/theodolite/issues) | [GitLab Issues](https://git.se.informatik.uni-kiel.de/she/theodolite/-/issues) |
+| Pull/Merge requests | [GitHub Pull requests](https://github.com/cau-se/theodolite/pulls) | [GitLab Merge requests](https://git.se.informatik.uni-kiel.de/she/theodolite/-/merge_requests) | 
+| Roadmap | | [GitLab Milestones](https://git.se.informatik.uni-kiel.de/she/theodolite/-/milestones) | 
+| CI/CD pipelines | | [GitLab CI/CD](https://git.se.informatik.uni-kiel.de/she/theodolite/-/pipelines) | 
+| Releases   | [GitHub Releases](https://github.com/cau-se/theodolite/releases) | [GitLab Releases](https://git.se.informatik.uni-kiel.de/she/theodolite/-/releases) | 
+| Container images | [GitHub Packages](https://github.com/orgs/cau-se/packages?repo_name=theodolite) | |
 
 ## Contributors