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/app/Providers/RouteServiceProvider.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace Streamline\Providers;
+
+use Illuminate\Support\Facades\Route;
+use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;
+
+class RouteServiceProvider extends ServiceProvider
+{
+    /**
+     * This namespace is applied to your controller routes.
+     *
+     * In addition, it is set as the URL generator's root namespace.
+     *
+     * @var string
+     */
+    protected $namespace = 'Streamline\Http\Controllers';
+
+    /**
+     * Define your route model bindings, pattern filters, etc.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        //
+
+        parent::boot();
+    }
+
+    /**
+     * Define the routes for the application.
+     *
+     * @return void
+     */
+    public function map()
+    {
+        $this->mapApiRoutes();
+
+        $this->mapWebRoutes();
+
+        //
+    }
+
+    /**
+     * Define the "web" routes for the application.
+     *
+     * These routes all receive session state, CSRF protection, etc.
+     *
+     * @return void
+     */
+    protected function mapWebRoutes()
+    {
+        Route::middleware('web')
+             ->namespace($this->namespace)
+             ->group(base_path('routes/web.php'));
+    }
+
+    /**
+     * Define the "api" routes for the application.
+     *
+     * These routes are typically stateless.
+     *
+     * @return void
+     */
+    protected function mapApiRoutes()
+    {
+        Route::prefix('api')
+             ->middleware('api')
+             ->namespace($this->namespace)
+             ->group(base_path('routes/api.php'));
+    }
+}