Separated install script to avoid launch errors

ref-test/Dockerfile

@@ -2,4 +2,5 @@ FROM python:3.10-slim
 WORKDIR /ref-test
 COPY . .
 RUN pip install --upgrade pip && pip install -r requirements.txt
+RUN chmod +x install.py && ./install.py
 CMD [ "gunicorn", "-b", "0.0.0.0:5000", "-w", "5", "wsgi:app" ]