dockerfile - update composer path

Dockerfile

@@ -34,7 +34,7 @@ COPY apache_ports.conf /etc/apache2/ports.conf
 COPY apache_vhost.conf /etc/apache2/sites-available/000-default.conf
 COPY web/ /var/www/
 # Set up composer
-WORKDIR /var/www/html/
+WORKDIR /var/www/
 RUN composer require jumbojett/openid-connect-php
 RUN composer install --no-dev --optimize-autoloader --no-interaction