add update script for FreeBSD Bastille jail deployment

update-fingerd.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+set -e
+
+bastille cmd finger sh -c '
+  cd /usr/local/src/finger &&
+  git pull &&
+  meson compile -C builddir &&
+  meson install -C builddir
+'
+
+bastille cmd finger service fingerd restart