Build modified streamline images

The official image from streamline does not currently work for the arm64
platform. As a temporary measure, the source code and docker build scripts
have been lifted from the official images and are used to build locally.

Some additional modifications are made to reduce overall image size, these
are documented in docker/README.md

docker/streamline-src/routes/console.php

@@ -0,0 +1,18 @@
+<?php
+
+use Illuminate\Foundation\Inspiring;
+
+/*
+|--------------------------------------------------------------------------
+| Console Routes
+|--------------------------------------------------------------------------
+|
+| This file is where you may define all of your Closure based console
+| commands. Each Closure is bound to a command instance allowing a
+| simple approach to interacting with each command's IO methods.
+|
+*/
+
+Artisan::command('inspire', function () {
+    $this->comment(Inspiring::quote());
+})->describe('Display an inspiring quote');