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/resources/lang/en/investigation_result_templates.php

@@ -0,0 +1,30 @@
+<?php
+
+return [
+    "add_result_templates" => "Add Result Templates",
+    "view_result_templates" => "View Result Templates",
+    "inactive_result_templates" => "Inactive Result Templates",
+    "investigation_result_templates" => "Investigation Result Templates",
+    "template" => "Template",
+    "investigation" => "Investigation",
+    "all_investigations" => "All Investigations",
+    "edit_result_template" => "Edit Result Template",
+    "new_result_template" => "New Result Template",
+    "add_variable" => "Add Variable",
+    "test_codes" => "Test Codes",
+    "cancel" => "Cancel",
+    "submit" => "Submit",
+    "test_code" => "Test Code",
+    "investigation_specialised_variable" => "Investigation Specialised Variable",
+    "machine_name" => "Machine Name",
+    "create" => "Create",
+    "add_test_code" => "Add Test Code",
+    "edit" => "Edit",
+    "edit_test_code" => "Edit test code",
+    "activate" => "Activate",
+    "activate_test_code" => "Activate Test Code",
+    "delete" => "Delete",
+    "investigation_test_codes" => "Investigation Test Codes",
+    "view_test_codes" => "View Test Codes",
+    "activate_test_codes" => "Activate Test Codes",
+];