Upgrade build enviroment from stretch to buster

src/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:stretch
+FROM debian:buster
 
 MAINTAINER Guy Sheffer <guysoft at gmail dot com>
 
@@ -8,7 +8,6 @@ RUN set -x \
         curl \
         git \
         wget \
-        realpath \
         p7zip-full \
         python3 \
         binfmt-support \

src/dist_generators/dist_example/src/vagrant/Vagrantfile

@@ -1,6 +1,6 @@
 vagrant_root = File.dirname(__FILE__)
 Vagrant.configure("2") do |o|
-    o.vm.box = "debian/stretch64"
+    o.vm.box = "debian/buster64"
     o.ssh.shell = "bash -c 'BASH_ENV=/etc/profile exec bash'"
     o.vm.synced_folder File.read("../custompios_path").gsub("\n",""), "/CustomPiOS", create:true, type: "nfs"
     o.vm.synced_folder "../", "/distro", create:true, type: "nfs"

src/dist_generators/dist_example/src/vagrant/setup.sh

@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
 sudo apt-get update
-sudo apt-get install -y gawk util-linux realpath git qemu-user-static p7zip-full unzip zip
+sudo apt-get install -y gawk util-linux git qemu-user-static p7zip-full unzip zip