diff --git a/Dockerfile b/Dockerfile
index 45f9efa..60c1fd1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
 FROM ubuntu:focal
 
+ENV DEBIAN_FRONTEND=noninteractive
+ENV http_proxy=http://acng.grote.lan:9999
+
 # hadolint ignore=DL3008
 RUN apt-get update \
     && apt-get upgrade -y \