Update CONTRIBUTING.md

CONTRIBUTING.md

@@ -1 +1,31 @@
- We are not currently accepting contributions. However, we appreciate community [feedback and suggestions](https://github.com/canopas/cloud-gallery/discussions/categories/feedback-suggestions) for future improvements.
+# Contributing
+Thank you so much for your interest in contributing! All types of contributions are encouraged and valued. The Project Team looks forward to your contributions.
+
+## Filing issues
+When in doubt, file an issue. We'd rather close a few duplicate issues than let a problem go unnoticed.
+Similarly, if you support a particular feature request, please let us know by commenting on the issue or [subscribing](https://help.github.com/articles/subscribing-to-conversations/) to the issue.
+
+If you are reporting a bug, please help speed up problem diagnosis by providing as much information as possible. Ideally, that would include a small sample project (or gist) that reproduces the problem.
+
+## Contributing code
+We actively welcome your pull requests. You can find instructions on building the project in [Wiki](https://github.com/canopas/cloud-gallery/wiki).
+1. Fork the repo and create your branch from `main`.
+2. If you've added code that should be tested, add tests.
+3. Make sure your code lints.
+
+## Labels
+Labels on issues are managed by contributors, you don't have to worry about them. Here's a list of what they mean:
+
+* **bug**: feature that should work, but doesn't
+* **enhancement**: minor tweak/addition to existing behavior
+* **feature**: new behavior, bigger than enhancement
+* **question**: no need for any fix, usually a usage problem
+* **reproducible**: has enough information to very easily reproduce, mostly in the form of a small project in a GitHub repo
+* **repro-needed**: we need some code to be able to reproduce and debug locally, otherwise there's not much we can do
+* **duplicate**: there's another issue that already covers/tracks this
+* **wontfix**: working as intended, or won't be fixed due to compatibility or other reasons
+* **invalid**: there isn't enough information to make a verdict, or unrelated
+* **non-library**: The issue is not in the core library code, but rather in documentation, samples, build process, releases
+
+## License
+By contributing to Cloud Gallery, you agree that your contributions will be licensed under its Apache License, Version 2.0. See the [LICENSE](https://github.com/canopas/cloud-gallery/blob/main/LICENSE) file for details.