# ── Stage 1: Build ──────────────────────────────────
FROM node:20-alpine AS builder

WORKDIR /app

# 先复制依赖描述文件，利用 Docker 缓存层
COPY package.json package-lock.json* ./

# 安装依赖
RUN npm install

# 复制源码
COPY . .

# 构建生产包（tsc + vite build → dist/）
RUN npm run build

# ── Stage 2: Serve ──────────────────────────────────
FROM nginx:alpine

# 将构建产物复制到 Nginx 默认静态目录
COPY --from=builder /app/dist /usr/share/nginx/html

# 自定义 Nginx 配置：支持 SPA 路由 fallback + gzip
COPY nginx.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

CMD ["nginx", "-g", "daemon off;"]