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/laravel/prompts/src/Concerns/FakesInputOutput.php

@@ -0,0 +1,91 @@
+<?php
+
+namespace Laravel\Prompts\Concerns;
+
+use Laravel\Prompts\Output\BufferedConsoleOutput;
+use Laravel\Prompts\Terminal;
+use PHPUnit\Framework\Assert;
+use RuntimeException;
+
+trait FakesInputOutput
+{
+    /**
+     * Fake the terminal and queue key presses to be simulated.
+     *
+     * @param  array<string>  $keys
+     */
+    public static function fake(array $keys = []): void
+    {
+        // Force interactive mode when testing because we will be mocking the terminal.
+        static::interactive();
+
+        $mock = \Mockery::mock(Terminal::class);
+
+        $mock->shouldReceive('write')->byDefault();
+        $mock->shouldReceive('exit')->byDefault();
+        $mock->shouldReceive('setTty')->byDefault();
+        $mock->shouldReceive('restoreTty')->byDefault();
+        $mock->shouldReceive('cols')->byDefault()->andReturn(80);
+        $mock->shouldReceive('lines')->byDefault()->andReturn(24);
+
+        foreach ($keys as $key) {
+            $mock->shouldReceive('read')->once()->andReturn($key);
+        }
+
+        static::$terminal = $mock;
+
+        self::setOutput(new BufferedConsoleOutput());
+    }
+
+    /**
+     * Assert that the output contains the given string.
+     */
+    public static function assertOutputContains(string $string): void
+    {
+        Assert::assertStringContainsString($string, static::content());
+    }
+
+    /**
+     * Assert that the output doesn't contain the given string.
+     */
+    public static function assertOutputDoesntContain(string $string): void
+    {
+        Assert::assertStringNotContainsString($string, static::content());
+    }
+
+    /**
+     * Assert that the stripped output contains the given string.
+     */
+    public static function assertStrippedOutputContains(string $string): void
+    {
+        Assert::assertStringContainsString($string, static::strippedContent());
+    }
+
+    /**
+     * Assert that the stripped output doesn't contain the given string.
+     */
+    public static function assertStrippedOutputDoesntContain(string $string): void
+    {
+        Assert::assertStringNotContainsString($string, static::strippedContent());
+    }
+
+    /**
+     * Get the buffered console output.
+     */
+    public static function content(): string
+    {
+        if (! static::output() instanceof BufferedConsoleOutput) {
+            throw new RuntimeException('Prompt must be faked before accessing content.');
+        }
+
+        return static::output()->content();
+    }
+
+    /**
+     * Get the buffered console output, stripped of escape sequences.
+     */
+    public static function strippedContent(): string
+    {
+        return preg_replace("/\e\[[0-9;?]*[A-Za-z]/", '', static::content());
+    }
+}