diff --git a/Dockerfile b/Dockerfile
index c436dfc..45103a5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,6 @@
+# hadolint ignore=DL3006
 FROM squidfunk/mkdocs-material
 
 # Beispiel; https://squidfunk.github.io/mkdocs-material/getting-started/
-RUN pip install mkdocs-macros-plugin
+# hadolint ignore=DL3013
+RUN pip install --no-cache-dir mkdocs-macros-plugin