Update Dockerfile

Dockerfile

@@ -1,3 +1,25 @@
+FROM node:22-bookworm AS builder
+
+# 预构建阶段（加快后续启动）
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends git ca-certificates && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* && \
+    curl -fsSL https://bun.sh/install | bash
+
+ENV PATH="/root/.bun/bin:${PATH}"
+RUN corepack enable
+
+WORKDIR /app
+
+ARG OPENCLAW_REPO=https://github.com/Josephrp/openclaw.git
+ARG OPENCLAW_REF=hf-spaces
+
+RUN git clone --depth 1 --branch "${OPENCLAW_REF}" "${OPENCLAW_REPO}" . && \
+    pnpm install --frozen-lockfile && \
+    pnpm build && \
+    pnpm ui:build
+
+# 最终运行阶段（使用预构建结果）
 FROM openclaw/openclaw:latest
 
 USER root