Change composer call for testing stage

.gitlab-ci.yml

@@ -29,10 +29,10 @@ test:
       - export COMPOSER_CACHE_DIR=.cache/composer
       - curl https://getcomposer.org/composer.phar -o composer.phar --silent
       - chmod +x composer.phar
-      - php composer.phar install
+      - ./composer.phar install
       - mkdir $TYPO3_PATH_WEB/fileadmin/ && touch $TYPO3_PATH_WEB/fileadmin/currentcoredata.json
   script:
-      - php composer.phar test:unit
+      - ./composer.phar test:unit
 
 
 build: