diff --git a/dockerfile b/dockerfile
index 07de97d5..52065174 100644
--- a/dockerfile
+++ b/dockerfile
@@ -7,6 +7,7 @@ COPY . candy
 RUN cd candy/build && cmake -G Ninja -DCMAKE_BUILD_TYPE=Release .. && cmake --build . && cmake --install .
 
 FROM base AS product
+VOLUME /var/lib/candy
 COPY --from=build /usr/local/bin/candy /usr/bin/candy
 ENTRYPOINT ["/usr/bin/candy"]
 CMD ["-m", "client", "-w", "wss://zone.icandy.one/demo", "-s", "stun://stun.qq.com"]