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/bin/phpcbf

@@ -0,0 +1,19 @@
+#!/usr/bin/env php
+<?php
+/**
+ * PHP Code Beautifier and Fixer fixes violations of a defined coding standard.
+ *
+ * @author    Greg Sherwood <gsherwood@squiz.net>
+ * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+if (is_file(__DIR__.'/../autoload.php') === true) {
+    include_once __DIR__.'/../autoload.php';
+} else {
+    include_once 'PHP/CodeSniffer/autoload.php';
+}
+
+$runner   = new PHP_CodeSniffer\Runner();
+$exitCode = $runner->runPHPCBF();
+exit($exitCode);

docker/streamline-src/vendor/squizlabs/php_codesniffer/bin/phpcbf.bat

@@ -0,0 +1,10 @@
+@echo off
+REM PHP Code Beautifier and Fixer fixes violations of a defined coding standard.
+REM 
+REM @author    Greg Sherwood <gsherwood@squiz.net>
+REM @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
+REM @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+
+set PHPBIN=php
+
+"%PHPBIN%" "%~dp0\phpcbf" %*

docker/streamline-src/vendor/squizlabs/php_codesniffer/bin/phpcs

@@ -0,0 +1,19 @@
+#!/usr/bin/env php
+<?php
+/**
+ * PHP_CodeSniffer detects violations of a defined coding standard.
+ *
+ * @author    Greg Sherwood <gsherwood@squiz.net>
+ * @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
+ * @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+ */
+
+if (is_file(__DIR__.'/../autoload.php') === true) {
+    include_once __DIR__.'/../autoload.php';
+} else {
+    include_once 'PHP/CodeSniffer/autoload.php';
+}
+
+$runner   = new PHP_CodeSniffer\Runner();
+$exitCode = $runner->runPHPCS();
+exit($exitCode);

docker/streamline-src/vendor/squizlabs/php_codesniffer/bin/phpcs.bat

@@ -0,0 +1,10 @@
+@echo off
+REM PHP_CodeSniffer detects violations of a defined coding standard.
+REM 
+REM @author    Greg Sherwood <gsherwood@squiz.net>
+REM @copyright 2006-2015 Squiz Pty Ltd (ABN 77 084 670 600)
+REM @license   https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/licence.txt BSD Licence
+
+set PHPBIN=php
+
+"%PHPBIN%" "%~dp0\phpcs" %*