diff --git a/rootfs/root/docker/setup/custom b/rootfs/root/docker/setup/custom
index b1911f8..d6a8ddc 100644
--- a/rootfs/root/docker/setup/custom
+++ b/rootfs/root/docker/setup/custom
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+export DEBIAN_FRONTEND="noninteractive"
+export DEBCONF_NONINTERACTIVE_SEEN="true"
+
 apt-get update &&
   apt-get -y upgrade &&
   apt-get install -yy mailman exim4 apache2 apache2-data apache2-utils &&