diff --git a/Dockerfile b/Dockerfile
index 46d5c4e..700a8cd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,4 +19,4 @@ RUN pacman -S git --noconfirm
 RUN pacman -S ruby-asciidoctor-html5s --noconfirm
 
 # Fix dubious ownership issue in GitHub Actions
-git config --system --add safe.directory '*'
+RUN git config --system --add safe.directory '*'