diff --git a/Dockerfile b/Dockerfile
index 8f04418..22e3e09 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -37,6 +37,8 @@ COPY --from=builder /app/config.json /
 COPY --from=builder /etc/passwd /etc/passwd
 COPY --from=builder /etc/group /etc/group
 
+EXPOSE 3000
+
 USER xfy
 
 CMD [ "/rua-list", "-c", "/config.json" ]
\ No newline at end of file