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/doctrine/inflector/composer.json

@@ -0,0 +1,41 @@
+{
+    "name": "doctrine/inflector",
+    "type": "library",
+    "description": "PHP Doctrine Inflector is a small library that can perform string manipulations with regard to upper/lowercase and singular/plural forms of words.",
+    "keywords": ["php", "strings", "words", "manipulation", "inflector", "inflection", "uppercase", "lowercase", "singular", "plural"],
+    "homepage": "https://www.doctrine-project.org/projects/inflector.html",
+    "license": "MIT",
+    "authors": [
+        {"name": "Guilherme Blanco", "email": "guilhermeblanco@gmail.com"},
+        {"name": "Roman Borschel", "email": "roman@code-factory.org"},
+        {"name": "Benjamin Eberlei", "email": "kontakt@beberlei.de"},
+        {"name": "Jonathan Wage", "email": "jonwage@gmail.com"},
+        {"name": "Johannes Schmitt", "email": "schmittjoh@gmail.com"}
+    ],
+    "require": {
+        "php": "^7.2 || ^8.0"
+    },
+    "require-dev": {
+        "doctrine/coding-standard": "^11.0",
+        "phpstan/phpstan": "^1.8",
+        "phpstan/phpstan-phpunit": "^1.1",
+        "phpstan/phpstan-strict-rules": "^1.3",
+        "phpunit/phpunit": "^8.5 || ^9.5",
+        "vimeo/psalm": "^4.25 || ^5.4"
+    },
+    "autoload": {
+        "psr-4": {
+            "Doctrine\\Inflector\\": "lib/Doctrine/Inflector"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Doctrine\\Tests\\Inflector\\": "tests/Doctrine/Tests/Inflector"
+        }
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
+    }
+}