build: use official pnpm image

Dockerfile.dev

@@ -1,19 +1,19 @@
 # syntax=docker/dockerfile:1.7
 
+ARG PNPM_VERSION=11.21.0
 ARG NODE_VERSION=24
 
-FROM node:${NODE_VERSION}-slim AS dev
+FROM ghcr.io/pnpm/pnpm:${PNPM_VERSION} AS dev
+
+ARG NODE_VERSION
+
+RUN pnpm runtime set node ${NODE_VERSION} -g --config.store-dir=/pnpm/runtime-store
 
 WORKDIR /app
 
-ENV COREPACK_ENABLE_DOWNLOAD_PROMPT=0 \
-	PNPM_HOME="/pnpm" \
-	PATH="/pnpm:$PATH" \
-	NODE_ENV=development \
+ENV NODE_ENV=development \
 	TURBO_TELEMETRY_DISABLED=1
 
-RUN corepack enable
-
 COPY package.json pnpm-lock.yaml pnpm-workspace.yaml turbo.json ./
 COPY patches ./patches
 COPY apps/server/package.json ./apps/server/package.json