added Makefile for docker based test

.gitignore

@@ -24,3 +24,9 @@ composer.phar
 phpunit.phar
 # local phpunit config
 /phpunit.xml
+
+/tests/runtime
+/tests/data/config.local.php
+/tests/docker
+/tests/dockerids
+

Makefile

+
+# default versions to test against
+# these can be overridden by setting the environment variables in the shell
+PHP_VERSION=php-5.6.8
+YII_VERSION=dev-master
+
+# ensure all the configuration variables above are in environment of the shell commands below
+export
+
+help:
+	@echo "make test    - run phpunit tests using a docker environment"
+#	@echo "make clean   - stop docker and remove container"
+
+test: docker-php
+	composer require "yiisoft/yii2:${YII_VERSION}" --prefer-dist
+	composer install --prefer-dist
+	docker run --rm=true -v $(shell pwd):/opt/test yiitest/php:${PHP_VERSION} phpunit --verbose --color
+
+docker-php: dockerfiles
+	cd tests/docker/php && sh build.sh
+
+dockerfiles:
+	test -d tests/docker || git clone https://github.com/cebe/jenkins-test-docker tests/docker
+	cd tests/docker && git checkout -- . && git pull
+	mkdir -p tests/dockerids
+