diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2d700685..9c3e93d1 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -2,7 +2,7 @@ FROM ubuntu:21.04
 
 WORKDIR /app
 ADD n9e /app
-ADD pub /app/
+COPY pub /app/
 RUN chmod +x n9e
 
 EXPOSE 19000