yarn install drupal core during poser (#8)

* yarn install drupal core during poser

* Also set required env vars

Author: weitzman

commands/web/phpunit

@@ -12,4 +12,4 @@ if ! command -v phpunit >/dev/null; then
   echo "phpunit is not available. You may need to 'ddev composer install'"
   exit 1
 fi
-phpunit --printer="\Drupal\Tests\Listeners\HtmlOutputPrinter" --bootstrap $PWD/$DDEV_DOCROOT/core/tests/bootstrap.php --testdox web/modules/custom "$@"
+phpunit --printer="\Drupal\Tests\Listeners\HtmlOutputPrinter" --bootstrap $PWD/$DDEV_DOCROOT/core/tests/bootstrap.php --testdox $DDEV_DOCROOT/modules/custom "$@"

commands/web/poser

@@ -12,3 +12,5 @@ export COMPOSER=composer.contrib.json
 .ddev/commands/web/expand-composer-json "$DDEV_PROJECT_NAME"
 composer install
 rm composer.contrib.json composer.contrib.lock
+yarn --cwd $DDEV_DOCROOT/core install
+touch $DDEV_DOCROOT/core/.env

config.contrib.yaml

@@ -1,5 +1,10 @@
 #ddev-generated
 ## Command provided by https://github.com/ddev/ddev-drupal-contrib
+web_environment:
+  - SIMPLETEST_DB=mysql://db:db@db/db
+  - SIMPLETEST_BASE_URL=http://web
+  - BROWSERTEST_OUTPUT_DIRECTORY=/tmp
+  - BROWSERTEST_OUTPUT_BASE_URL=${DDEV_PRIMARY_URL}
 hooks:
   post-start:
     - exec-host: |