build: pin pnpm version in Dockerfile

Fwind43 · Fwind43 · commit 626d652058c4 · 2026-05-12T15:02:32.000+08:00
diff --git a/Dockerfile b/Dockerfile
@@ -21,7 +21,7 @@ FROM ${NODE_IMAGE} AS frontend-builder
 WORKDIR /app/frontend
 
 # Install pnpm
-RUN corepack enable && corepack prepare pnpm@latest --activate
+RUN corepack enable && corepack prepare pnpm@9.15.9 --activate
 
 # Install dependencies first (better caching)
 COPY frontend/package.json frontend/pnpm-lock.yaml ./
