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/league/flysystem/src/UnableToRetrieveMetadata.php

@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace League\Flysystem;
+
+use RuntimeException;
+use Throwable;
+
+final class UnableToRetrieveMetadata extends RuntimeException implements FilesystemOperationFailed
+{
+    /**
+     * @var string
+     */
+    private $location;
+
+    /**
+     * @var string
+     */
+    private $metadataType;
+
+    /**
+     * @var string
+     */
+    private $reason;
+
+    public static function lastModified(string $location, string $reason = '', Throwable $previous = null): self
+    {
+        return static::create($location, FileAttributes::ATTRIBUTE_LAST_MODIFIED, $reason, $previous);
+    }
+
+    public static function visibility(string $location, string $reason = '', Throwable $previous = null): self
+    {
+        return static::create($location, FileAttributes::ATTRIBUTE_VISIBILITY, $reason, $previous);
+    }
+
+    public static function fileSize(string $location, string $reason = '', Throwable $previous = null): self
+    {
+        return static::create($location, FileAttributes::ATTRIBUTE_FILE_SIZE, $reason, $previous);
+    }
+
+    public static function mimeType(string $location, string $reason = '', Throwable $previous = null): self
+    {
+        return static::create($location, FileAttributes::ATTRIBUTE_MIME_TYPE, $reason, $previous);
+    }
+
+    public static function create(string $location, string $type, string $reason = '', Throwable $previous = null): self
+    {
+        $e = new static("Unable to retrieve the $type for file at location: $location. {$reason}", 0, $previous);
+        $e->reason = $reason;
+        $e->location = $location;
+        $e->metadataType = $type;
+
+        return $e;
+    }
+
+    public function reason(): string
+    {
+        return $this->reason;
+    }
+
+    public function location(): string
+    {
+        return $this->location;
+    }
+
+    public function metadataType(): string
+    {
+        return $this->metadataType;
+    }
+
+    public function operation(): string
+    {
+        return FilesystemOperationFailed::OPERATION_RETRIEVE_METADATA;
+    }
+}