# ===== 阶段 1: 依赖安装 =====
FROM node:18-alpine AS deps
WORKDIR /app
RUN apk add --no-cache libc6-compat
COPY package.json package-lock.json* ./
RUN if [ -f package-lock.json ]; then \
      npm ci --no-audit --no-fund; \
    else \
      npm install --no-audit --no-fund; \
    fi

# ===== 阶段 2: 构建 =====
FROM node:18-alpine AS builder
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1
COPY --from=deps /app/node_modules ./node_modules
COPY . .
RUN npm run build

# ===== 阶段 3: 运行时 =====
FROM node:18-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001

COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

USER nextjs
EXPOSE 3000
CMD ["node", "server.js"]
