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/squizlabs/php_codesniffer/tests/bootstrap.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * Bootstrap file for PHP_CodeSniffer unit tests.
+ *
+ * @author    Greg Sherwood <gsherwood@squiz.net>
+ * @copyright 2006-2017 Squiz Pty Ltd (ABN 77 084 670 600)
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+if (defined('PHP_CODESNIFFER_IN_TESTS') === false) {
+    define('PHP_CODESNIFFER_IN_TESTS', true);
+}
+
+if (defined('PHP_CODESNIFFER_CBF') === false) {
+    define('PHP_CODESNIFFER_CBF', false);
+}
+
+if (defined('PHP_CODESNIFFER_VERBOSITY') === false) {
+    define('PHP_CODESNIFFER_VERBOSITY', 0);
+}
+
+if (is_file(__DIR__.'/../autoload.php') === true) {
+    include_once __DIR__.'/../autoload.php';
+} else {
+    include_once 'PHP/CodeSniffer/autoload.php';
+}
+
+$tokens = new \PHP_CodeSniffer\Util\Tokens();
+
+// Compatibility for PHPUnit < 6 and PHPUnit 6+.
+if (class_exists('PHPUnit_Framework_TestSuite') === true && class_exists('PHPUnit\Framework\TestSuite') === false) {
+    class_alias('PHPUnit_Framework_TestSuite', 'PHPUnit'.'\Framework\TestSuite');
+}
+
+if (class_exists('PHPUnit_Framework_TestCase') === true && class_exists('PHPUnit\Framework\TestCase') === false) {
+    class_alias('PHPUnit_Framework_TestCase', 'PHPUnit'.'\Framework\TestCase');
+}
+
+if (class_exists('PHPUnit_TextUI_TestRunner') === true && class_exists('PHPUnit\TextUI\TestRunner') === false) {
+    class_alias('PHPUnit_TextUI_TestRunner', 'PHPUnit'.'\TextUI\TestRunner');
+}
+
+if (class_exists('PHPUnit_Framework_TestResult') === true && class_exists('PHPUnit\Framework\TestResult') === false) {
+    class_alias('PHPUnit_Framework_TestResult', 'PHPUnit'.'\Framework\TestResult');
+}
+
+
+/**
+ * A global util function to help print unit test fixing data.
+ *
+ * @return void
+ */
+function printPHPCodeSnifferTestOutput()
+{
+    echo PHP_EOL.PHP_EOL;
+
+    $output = 'The test files';
+    $data   = [];
+
+    $codeCount = count($GLOBALS['PHP_CODESNIFFER_SNIFF_CODES']);
+    if (empty($GLOBALS['PHP_CODESNIFFER_SNIFF_CASE_FILES']) === false) {
+        $files     = call_user_func_array('array_merge', $GLOBALS['PHP_CODESNIFFER_SNIFF_CASE_FILES']);
+        $files     = array_unique($files);
+        $fileCount = count($files);
+
+        $output = '%d sniff test files';
+        $data[] = $fileCount;
+    }
+
+    $output .= ' generated %d unique error codes';
+    $data[]  = $codeCount;
+
+    if ($codeCount > 0) {
+        $fixes   = count($GLOBALS['PHP_CODESNIFFER_FIXABLE_CODES']);
+        $percent = round(($fixes / $codeCount * 100), 2);
+
+        $output .= '; %d were fixable (%d%%)';
+        $data[]  = $fixes;
+        $data[]  = $percent;
+    }
+
+    vprintf($output, $data);
+
+}//end printPHPCodeSnifferTestOutput()