diff --git a/Dockerfile b/Dockerfile
index 629c8c6..ebea045 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -68,4 +68,4 @@ WORKDIR /home/discourse/discourse
 
 USER discourse
 
-CMD bundle exec rails server -b 0.0.0.0
+CMD ["bundle", "exec", "rails", "server", "-b", "0.0.0.0"]