use less restrictive licence

This is necessary to allow the solutions to be kept private.

1 files changed, 12 insertions, 0 deletions

diff --git a/index.md b/index.md
index 14a5633..83ccdbd 100644
--- a/index.md
+++ b/index.md
@@ -68,3 +68,15 @@ Pages.
 - [Quarto (reference)](https://quarto.org/docs/reference/index.html)
 - [Nix guides](https://nixos.org/learn.html)
 - [GitLab CI configuration reference](https://docs.gitlab.com/ee/ci/yaml/)
+
+
+## Licence
+
+The code of this example is licensed under the [CC BY-NC 4.0].
+
+It can be used as a template for course websites, without requiring the
+publication of the added original content (which can may contain exercise
+solutions not meant to be shared publicly).
+
+[CC BY-NC 4.0]: https://creativecommons.org/licenses/by-nc/4.0/
+