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/Http/Controllers/Auth/ForgotPasswordController.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Streamline\Http\Controllers\Auth;
+
+use Streamline\Http\Controllers\Controller;
+use Illuminate\Foundation\Auth\SendsPasswordResetEmails;
+
+class ForgotPasswordController extends Controller
+{
+    /*
+    |--------------------------------------------------------------------------
+    | Password Reset Controller
+    |--------------------------------------------------------------------------
+    |
+    | This controller is responsible for handling password reset emails and
+    | includes a trait which assists in sending these notifications from
+    | your application to your users. Feel free to explore this trait.
+    |
+    */
+
+    use SendsPasswordResetEmails;
+
+    /**
+     * Create a new controller instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        $this->middleware('guest');
+    }
+}