Update Dockerfile

Dockerfile

@@ -8,7 +8,8 @@ WORKDIR $APP_HOME
 COPY . ./
 
 ENV GOOGLE_APPLICATION_CREDENTIALS "./token.json"
-
+RUN chmod u+w static/uploaded_videos/ \
+    && chown -R user:user static/uploaded_videos/
 RUN apt-get update && apt-get install -y \
     libglib2.0-0 \
     libsm6 \