build: copy wireguard secrets

build.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+#
+# Modifies the file hierarchy prior to build the Debian package.
+
+set -eux
+
+hash gbp
+
+# Builds wireguard configuration files.
+#
+# This mainly copies secret files and `wg0.conf` definition.
+build_wireguard() {
+	cp -r ./secrets/files/etc/wireguard ./files/etc
+}
+
+build_wireguard
+
+gbp buildpackage