HipHop VM + Scheck (pfff) + PHP Mess Detector
docker build -t phpsa .
docker run -v /path/to/your/app:/app -i -t phpsa scheck /app
docker run -v /path/to/your/app:/app -i -t phpsa hhvm-wrapper analyze /app
docker run -v /path/to/your/app:/app -i -t phpsa phpmd /app text unusedcode