diff --git a/Dockerfile b/Dockerfile
index d834e97..7408c3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -33,9 +33,7 @@ RUN cat <<EOF > /app/config.json
 EOF
 
 # Change line break
-RUN find /app -type f -print0 \
-  | xargs -0 grep -Il "$(printf '\r')" \
-  | xargs -0 sed -i 's/\r$//'
+RUN find /app -type f -exec sed -i 's/\r$//' {} \;
 
 # Run
 CMD [ "npm", "start" ]
\ No newline at end of file