diff --git a/build_debian.sh b/build_debian.sh
index 7fde49c..c461109 100755
--- a/build_debian.sh
+++ b/build_debian.sh
@@ -10,14 +10,21 @@ debian_install(){
     buildah run --user 0:0 "$1" apt install /tmp/package.deb
 }
 
+debian_selection(){
+    selectionfile="$2"
+    buildah copy "$1" "$selectionfile" /tmp/seed
+    buildah run --user 0:0 "$1" debconf-set-selections /tmp/seed
+}
 
 init_container "$container" "docker.io/debian:${version}"
+buildah config -e DEBIAN_FRONTEND=noninteractive "$container"
 debian_list=$(mktemp)
 sed "s;VERSION;${version};g" repos/debian.list >"$debian_list"
 buildah run --user 0:0 "$container" apt update
 buildah run --user 0:0 "$container" apt install -y ca-certificates
 buildah copy  "$container" "$debian_list" /etc/apt/sources.list.d/eigene.list
 buildah run --user 0:0 "$container" apt update
+debian_selection "$container" selections.txt
 buildah run --user 0:0 "$container" apt install -y build-essential nodejs git git-buildpackage
 commit "$container" "oci:debian:${version}"
 
diff --git a/cleanup.sh b/cleanup.sh
new file mode 100755
index 0000000..3b389b3
--- /dev/null
+++ b/cleanup.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+mount=$(buildah mount $1)
+[ -z "$mount" ] && (echo "no mount given" ;exit 1)
+rm -rf "$mount"/usr/share/doc/*
+rm -rf "$mount"/usr/share/man/*
+rm -rf "$mount"/usr/share/locale/*
+rm -rf "$mount"/var/lib/apt/lists/*
+rm -rf "$mount"/var/cache/*
+rm -rf "$mount"/tmp/*
+hardlink -potm --reflink=always $mount
diff --git a/common.sh b/common.sh
index 0fbbd3e..5609595 100644
--- a/common.sh
+++ b/common.sh
@@ -11,9 +11,11 @@ init_container () {
 }
 
 commit(){
-    buildah config -e - -l - -a - -p - "$1"
-    buildah config -e PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin" "$1"
-    buildah commit --rm -f oci --squash "$1" "$2"
+    local container="$1"
+    buildah config -e - -l - -a - -p - "$container"
+    buildah config -e PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin" "$container"
+    buildah unshare ./cleanup.sh "$container"
+    buildah commit --rm -f oci --squash "$container" "$2"
     trap - EXIT
 }
 
diff --git a/selections.txt b/selections.txt
new file mode 100644
index 0000000..75ac3cb
--- /dev/null
+++ b/selections.txt
@@ -0,0 +1 @@
+pbuilder pbuilder/mirrorsite string https://deb.debian.org/debian