diff --git a/Dockerfile b/Dockerfile
index 8e23763..9418181 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,4 +3,4 @@ FROM squidfunk/mkdocs-material
 
 # Beispiel; https://squidfunk.github.io/mkdocs-material/getting-started/
 # hadolint ignore=DL3013
-# RUN pip install --no-cache-dir
+RUN pip install --no-cache-dir mkdocs-include-dir-to-nav