# 第一步：编译阶段
FROM node:20 AS builder

# 设置工作目录
WORKDIR /app

# 拷贝依赖文件并安装
COPY package*.json yarn.lock ./
RUN yarn install --frozen-lockfile

# 拷贝源码
COPY . .

# 打包（构建 Nuxt 项目）
RUN yarn build

# 第二步：导出产物阶段（可选用于提取）
FROM alpine:3.18 AS export

WORKDIR /export
COPY --from=builder /app/.output .output

# 你也可以选择只拷贝 .output/public 目录
COPY --from=builder /app/.output/public public