diff --git a/.gitattributes b/.gitattributes
index aa9b4bd..3ea8fdf 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,6 +1,7 @@
-# Normalize line endings — the deploy target is Linux; *.sh must stay LF
+# Normalize line endings — the deploy target is Linux; these must stay LF
 * text=auto
 *.sh text eol=lf
 *.bash text eol=lf
+Dockerfile text eol=lf
 
 # OS / editor noise