update docker

Dockerfile

@@ -10,4 +10,4 @@ COPY --chown=user ./requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
 COPY --chown=user . /app
-CMD gunicorn app:app -b :8080 --timeout 120 --workers=3 --threads=3 --worker-connections=1000
+CMD gunicorn app:app -b :7860 --timeout 120 --workers=3 --threads=3