feat: add declarative site parser engine

site_parser_worker/Dockerfile

@@ -4,7 +4,7 @@ WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 RUN playwright install chrome
-COPY app.py .
+COPY app.py extractor.py ./
 
 ENV PYTHONUNBUFFERED=1
 EXPOSE 8080