diff --git a/Dockerfile b/Dockerfile
index 1649d422..9a63c975 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,5 +34,6 @@ EXPOSE 5230
 
 # Directory to store the data, which can be referenced as the mounting point.
 RUN mkdir -p /var/opt/memos
+VOLUME /var/opt/memos
 
 ENTRYPOINT ["./memos", "--mode", "prod", "--port", "5230"]