diff --git a/steps/improve/setup_repo.sh b/steps/improve/setup_repo.sh
index b9baef6..60fc351 100755
--- a/steps/improve/setup_repo.sh
+++ b/steps/improve/setup_repo.sh
@@ -5,3 +5,5 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 mkdir -p /external/repo
+
+tar -cf - --exclude='/external/repo/*' --exclude='/external/repo-preseeded/*' --exclude='/external/distfiles/*' --exclude='/dev/*' --exclude='/proc/*' --exclude='/sys/*' --exclude='/tmp/*' / | bzip2 --best > /external/repo/base.tar.bz2