# 生产环境 Admin Dockerfile（最小构建）
# 用途：构建优化的 Next.js 生产镜像
# 支持通过构建参数指定基础镜像
ARG NODE_IMAGE=node:20-alpine
FROM ${NODE_IMAGE} AS builder

WORKDIR /app

# 设置 npm 镜像（可选，根据网络情况）
ARG NPM_REGISTRY=https://registry.npmjs.org
RUN npm config set registry ${NPM_REGISTRY}

# 复制依赖文件
COPY admin/package.json admin/package-lock.json* ./

# 安装依赖
RUN npm ci --legacy-peer-deps --only=production

# 复制源代码
COPY admin/ .

# 构建 Next.js 应用
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm run build

# 生产镜像
ARG NODE_IMAGE=node:20-alpine
FROM ${NODE_IMAGE}

WORKDIR /app

# 从 builder 复制构建产物
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/public ./public

# 设置环境变量
ENV NODE_ENV=production
ENV PORT=3000
ENV NEXT_TELEMETRY_DISABLED=1

# 创建非 root 用户
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nextjs -u 1001 && \
    chown -R nextjs:nodejs /app

USER nextjs

EXPOSE 3000

# 健康检查
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD node -e "require('http').get('http://localhost:3000', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})" || exit 1

CMD ["node", "server.js"]