diff --git a/.dockerignore b/.dockerignore
index 6fbbfc1..3d61d7d 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,3 +1,4 @@
+# Ignore everything by default to avoid accidentally including sensitive files in the image, then explicitly include only what we need to run the app.
 *
 
 !Dockerfile