Add vagrant support for testing

Vagrantfile

@@ -0,0 +1,24 @@
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+VAGRANTFILE_API_VERSION = "2"
+
+Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
+
+  config.vm.define "bastille" do |vm_config|
+
+    vm_config.ssh.shell = "sh"
+
+    vm_config.vm.box = "freebsd/FreeBSD-12.1-RELEASE"
+    vm_config.vm.box_version = "2019.11.01"
+
+    vm_config.vm.provider "virtualbox" do |vb|
+      vb.name = "bastille"
+      vb.cpus = "1"
+      vb.memory = "1024"
+    end
+
+    vm_config.vm.provision "shell", inline: "cd /vagrant; make install"
+
+  end
+end