added gunicorn

Dockerfile

@@ -13,4 +13,5 @@ COPY --chown=user ./requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
 COPY --chown=user . /app
-CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]
+# CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["gunicorn", "-w", "4", "-k", "uvicorn.workers.UvicornWorker", "--bind", "0.0.0.0:7860", "app:app"]

requirements.txt

@@ -1,3 +1,4 @@
 fastapi
 uvicorn[standard]
 sentence_transformers
+gunicorn