small fix

Dockerfile

@@ -4,7 +4,9 @@ WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
-RUN mkdir -p /tmp/uploads && chmod 777 /tmp/uploads
+RUN mkdir -p /tmp/uploads && \
+    chmod 777 /tmp/uploads && \
+    chmod +x entrypoint.sh
 EXPOSE 5000
 USER 1000
 ENTRYPOINT ["./entrypoint.sh"]