fix: Dockerfile 添加国内镜像加速和 Chromium 预装

- npm/pnpm 使用 registry.npmmirror.com 镜像
- 构建阶段预装 Chromium 并复制到生产镜像

Dockerfile

@@ -4,17 +4,26 @@
 
 FROM node:22-slim AS builder
 
+# China npm mirror
+RUN npm config set registry https://registry.npmmirror.com
+
 # Enable corepack for pnpm
 RUN corepack enable && corepack prepare pnpm@latest --activate
 
 WORKDIR /app
 
+# pnpm also uses npm mirror
+RUN pnpm config set registry https://registry.npmmirror.com
+
 # Copy package manifests first (layer caching for dependency install)
 COPY package.json pnpm-lock.yaml ./
 
 # Install all dependencies (including devDependencies for building)
 RUN pnpm install --frozen-lockfile
 
+# Install Chromium for rebrowser-playwright (during build, included in image)
+RUN npx playwright install chromium
+
 # Copy source code
 COPY tsconfig.json tsup.config.ts ./
 COPY src/ src/
@@ -66,6 +75,9 @@ COPY --from=builder --chown=appuser:appuser /app/dist ./dist
 COPY --from=builder --chown=appuser:appuser /app/node_modules ./node_modules
 COPY --from=builder --chown=appuser:appuser /app/package.json ./package.json
 
+# Copy Playwright browsers from builder
+COPY --from=builder --chown=appuser:appuser /root/.cache/ms-playwright /home/appuser/.cache/ms-playwright
+
 # Create data directory for cookies and API token
 RUN mkdir -p /home/appuser/.social-mcp \
     && chown -R appuser:appuser /home/appuser/.social-mcp