fix: update docker build

Dockerfile

@@ -11,11 +11,11 @@ RUN apt update -qqy \
 RUN --mount=type=ssh mkdir -p ${APP_DATA_DIR}
 
 RUN useradd -m -u 1000 user
-USER user
-WORKDIR /app
 RUN --mount=type=ssh chown -R user:user /app
 RUN --mount=type=ssh chown -R user:user ${APP_DATA_DIR}
 
+USER user
+WORKDIR /app
 
 COPY ktem_app_data.zip ${APP_DATA_DIR}
 COPY flowsettings.py /app