Merge branch 'rotscher--tu-dresden.de-preview-patch-94480' into 'preview'

Added git package to Docker image.

See merge request !394

Dockerfile

@@ -10,7 +10,7 @@ RUN pip install mkdocs>=1.1.2 mkdocs-material>=7.1.0
 # Linter #
 ##########
 
-RUN apt update && apt install -y nodejs npm aspell
+RUN apt update && apt install -y nodejs npm aspell git
 
 RUN npm install -g markdownlint-cli markdown-link-check