Add Vagrant config and provisioning for Debian 8

vagrant/debian-8-x64/Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+
+  # Set which Vagrant "box" (base image) to use, and tell it how to set up the
+  # VM, packages to install, etc.
+  config.vm.box = "debian/jessie64"
+  config.vm.provision :shell, path: "bootstrap.sh"
+
+  # Additional parameters for the VM
+  config.vm.provider "virtualbox" do |vb|
+      vb.memory = 2048
+      vb.cpus = 2
+  end
+
+  # Share the Phoenix/dist folder so the VM can get the source tarball and has
+  # a place to put the build results.
+  config.vm.synced_folder "../../dist", "/home/vagrant/dist"
+
+end

vagrant/debian-8-x64/bootstrap.sh

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+#!/bin/bash
+
+# Set up and update package repos
+apt-get update
+
+# Install necessary development and other packages
+apt-get install -y build-essential dpkg-dev
+apt-get install -y libgtk2.0-dev libgtk-3-dev
+
+apt-get install -y libwebkitgtk-dev libjpeg-dev libtiff-dev \
+	libsdl1.2-dev libgstreamer-plugins-base0.10-dev \
+	libnotify-dev freeglut3 freeglut3-dev
+
+# Install all available Python packages and their dev packages
+apt-get install -y python2.7 python2.7-dev libpython2.7-dev python-virtualenv
+apt-get install -y python3.4 python3.4-dev libpython3.4-dev python3.4-venv
+#apt-get install -y python3.5 python3.5-dev libpython3.5-dev python3.5-venv
+
+# Set up virtual environments for each Python where the Phoenix builds will be done
+virtualenv --python=python2.7 Py27
+pyvenv-3.4 Py34
+#pyvenv-3.5 Py35
+