diff --git a/rootfs/etc/s6-overlay/s6-rc.d/startup/down b/rootfs/etc/s6-overlay/s6-rc.d/startup/down
new file mode 100755
index 0000000..2f14f7f
--- /dev/null
+++ b/rootfs/etc/s6-overlay/s6-rc.d/startup/down
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /etc/s6-overlay/scripts/startup-finish
diff --git a/rootfs/etc/s6-overlay/scripts/startup-finish b/rootfs/etc/s6-overlay/scripts/startup-finish
new file mode 100755
index 0000000..b8410cb
--- /dev/null
+++ b/rootfs/etc/s6-overlay/scripts/startup-finish
@@ -0,0 +1,20 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash disable=SC1091,SC2076
+
+source /scripts/common
+
+SDIR=/etc/s6-overlay/finish.d
+
+# exit 0 for nonexistent or empty directory
+if ! [[ -d "$SDIR" ]] || [[ -z "$(ls "$SDIR")" ]]; then
+    exit 0
+fi
+
+cd "$SDIR" || exit 1
+
+for NAME in *; do
+    if ! s6wrap --quiet --prepend="$NAME" --timestamps --args "$SDIR/$NAME"; then
+        s6wrap --quiet --prepend=startup --timestamps --args echo Error running "$SDIR/$NAME"
+        exit 1
+    fi
+done