# ---- 构建阶段 ----
FROM node:22-alpine AS builder

WORKDIR /app

# 使用国内 npm 镜像
RUN npm config set registry https://registry.npmmirror.com

# 先复制依赖清单，利用 Docker 缓存层
COPY package.json package-lock.json ./

# --mount=type=cache 复用 npm 缓存，依赖不变时跳过下载
# --no-audit 跳过安全审计，提速明显
RUN --mount=type=cache,target=/root/.npm \
    npm ci --no-audit

# 复制源码并构建（Vite 构建缓存也复用）
COPY . .
RUN --mount=type=cache,target=/root/.npm \
    --mount=type=cache,target=/app/node_modules/.vite \
    npm run build

# ---- 运行阶段 ----
FROM nginx:stable-alpine

# 复制 Nginx 配置
COPY nginx.conf /etc/nginx/conf.d/default.conf

# 复制构建产物
COPY --from=builder /app/dist /usr/share/nginx/html

EXPOSE 80

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