fix: update docker build

Dockerfile

@@ -8,7 +8,11 @@ RUN apt update -qqy \
   apt-get clean && \
   apt-get autoremove
 
+
+RUN useradd -m -u 1000 user
+USER user
 WORKDIR /app
+
 RUN --mount=type=ssh mkdir -p ${APP_DATA_DIR}
 
 COPY ktem_app_data.zip ${APP_DATA_DIR}
@@ -17,5 +21,6 @@ COPY flowsettings.py /app
 RUN --mount=type=ssh cd ${APP_DATA_DIR} \
   && unzip ktem_app_data.zip \
   && rm ktem_app_data.zip
+RUN --mount=type=ssh chown -R user:user /app
 
 ENTRYPOINT ["python", "app.py"]