refactor: unify pnpm version management with packageManager field (#23943)

web/Dockerfile

@@ -6,7 +6,7 @@ LABEL maintainer="takatost@gmail.com"
 # RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 
 RUN apk add --no-cache tzdata
-RUN npm install -g pnpm@10.13.1
+RUN corepack enable
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
 
@@ -19,6 +19,9 @@ WORKDIR /app/web
 COPY package.json .
 COPY pnpm-lock.yaml .
 
+# Use packageManager from package.json
+RUN corepack install
+
 # if you located in China, you can use taobao registry to speed up
 # RUN pnpm install --frozen-lockfile --registry https://registry.npmmirror.com/