diff --git a/Dockerfile.ubuntu b/Dockerfile.ubuntu
index b4f9333..f2a7f3e 100644
--- a/Dockerfile.ubuntu
+++ b/Dockerfile.ubuntu
@@ -1,7 +1,7 @@
 FROM ubuntu:20.04 as opencv
 LABEL maintainer="kaiiak,aNxFi37X@outlook.com"
 
-# ENV DEBIAN_FRONTEND noninteractive
+ENV DEBIAN_FRONTEND noninteractive
 
 ARG OPENCV_VERSION="4.5.4"
 ENV OPENCV_VERSION $OPENCV_VERSION