diff --git a/scripts/bootstrap-to-docker.sh b/scripts/bootstrap-to-docker.sh
index 0a28ca1..42fef90 100755
--- a/scripts/bootstrap-to-docker.sh
+++ b/scripts/bootstrap-to-docker.sh
@@ -34,6 +34,14 @@ for arch in ${archs}; do
             echo " ----    install ${tmpdir}/${distro}-${arch}" 1>&2
             sudo debootstrap --arch="$arch" "$distro" "${tmpdir}/${distro}-${arch}"
         fi
+        echo " ----    prevent packages in ${tmpdir}/${distro}-${arch}" 1>&2
+        for f in "libpam-systemd:amd64" "policykit*" "colord"; do
+            sudo chroot "${tmpdir}/${distro}-${arch}" cat >> /etc/apt/preferences <<EOF
+Package: $f
+Pin-Priority: -100
+
+EOF
+        done
         echo " ----    upgrade ${tmpdir}/${distro}-${arch}" 1>&2
         sudo chroot "${tmpdir}/${distro}-${arch}" apt-get update
         sudo chroot "${tmpdir}/${distro}-${arch}" apt-get -y upgrade