Use the pid file deleting script

Author: yosifkit

Dockerfile

@@ -26,4 +26,4 @@ COPY docker-entrypoint.sh /entrypoint.sh
 
 # grr, ENTRYPOINT resets CMD now
 ENTRYPOINT ["/entrypoint.sh"]
-CMD ["apache2", "-DFOREGROUND"]
+CMD ["apache2-foreground"]