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/vendor/nwidart/laravel-modules/src/Commands/MailMakeCommand.php

@@ -0,0 +1,87 @@
+<?php
+
+namespace Nwidart\Modules\Commands;
+
+use Illuminate\Support\Str;
+use Nwidart\Modules\Support\Config\GenerateConfigReader;
+use Nwidart\Modules\Support\Stub;
+use Nwidart\Modules\Traits\ModuleCommandTrait;
+use Symfony\Component\Console\Input\InputArgument;
+
+class MailMakeCommand extends GeneratorCommand
+{
+    use ModuleCommandTrait;
+
+    /**
+     * The console command name.
+     *
+     * @var string
+     */
+    protected $name = 'module:make-mail';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Create a new email class for the specified module';
+
+    protected $argumentName = 'name';
+
+    public function getDefaultNamespace(): string
+    {
+        $module = $this->laravel['modules'];
+
+        return $module->config('paths.generator.emails.namespace') ?: $module->config('paths.generator.emails.path', 'Emails');
+    }
+
+    /**
+     * Get the console command arguments.
+     *
+     * @return array
+     */
+    protected function getArguments()
+    {
+        return [
+            ['name', InputArgument::REQUIRED, 'The name of the mailable.'],
+            ['module', InputArgument::OPTIONAL, 'The name of module will be used.'],
+        ];
+    }
+
+    /**
+     * Get template contents.
+     *
+     * @return string
+     */
+    protected function getTemplateContents()
+    {
+        $module = $this->laravel['modules']->findOrFail($this->getModuleName());
+
+        return (new Stub('/mail.stub', [
+            'NAMESPACE' => $this->getClassNamespace($module),
+            'CLASS'     => $this->getClass(),
+        ]))->render();
+    }
+
+    /**
+     * Get the destination file path.
+     *
+     * @return string
+     */
+    protected function getDestinationFilePath()
+    {
+        $path = $this->laravel['modules']->getModulePath($this->getModuleName());
+
+        $mailPath = GenerateConfigReader::read('emails');
+
+        return $path . $mailPath->getPath() . '/' . $this->getFileName() . '.php';
+    }
+
+    /**
+     * @return string
+     */
+    private function getFileName()
+    {
+        return Str::studly($this->argument('name'));
+    }
+}