diff --git a/lambdas/define_auth_challenge/Dockerfile b/lambdas/define_auth_challenge/Dockerfile
index 9234318..03daa0f 100644
--- a/lambdas/define_auth_challenge/Dockerfile
+++ b/lambdas/define_auth_challenge/Dockerfile
@@ -1,5 +1,6 @@
 FROM public.ecr.aws/lambda/nodejs:18.2023.05.19.01
 
+# Copy files
 COPY index.js ${LAMBDA_TASK_ROOT}
 
 CMD [ "index.handler" ]