diff --git a/packages/ui/Dockerfile b/packages/ui/Dockerfile
index 9dad28fe..962930f8 100644
--- a/packages/ui/Dockerfile
+++ b/packages/ui/Dockerfile
@@ -2,6 +2,8 @@ FROM node:18-alpine AS builder
 EXPOSE 7001
 WORKDIR /workspace/
 COPY . /workspace/
+# armv7 目前只能用node18， pnpm9不支持node18,所以pnpm只能用8.15.7版本
+# https://github.com/nodejs/docker-node/issues/1946
 RUN npm install -g pnpm@8.15.7
 
 #RUN cd /workspace/certd-client && pnpm install && npm run build