diff --git a/scripts/tweak-init-policy b/scripts/tweak-init-policy
new file mode 100755
index 0000000..6437687
--- /dev/null
+++ b/scripts/tweak-init-policy
@@ -0,0 +1,19 @@
+#!/bin/sh -eu
+# tweak-init-policy -- for use in a Docker image
+# Copyright (C) 2017  Olaf Meeuwissen
+#
+# License: GPL-3.0+
+
+cat > /usr/sbin/policy-rc.d.docker <<EOF
+#!/bin/sh
+exit 101		# action forbidden by policy
+EOF
+chmod 0755 /usr/sbin/policy-rc.d.docker
+
+update-alternatives --quiet --install /usr/sbin/policy-rc.d \
+                    policy-rc.d /usr/sbin/policy-rc.d.docker 100
+
+dpkg-divert --quiet --local --add /sbin/initctl
+ln -fs /bin/true /sbin/initctl
+
+rm $0