ci: 添加 Docker + Jenkins 自动化部署配置

- Dockerfile 多阶段构建，standalone 模式输出
- Jenkinsfile 定义 GitLab 触发的 CI/CD 流水线
- docker-compose.yml 简化部署
- next.config.ts 开启 standalone 输出

Dockerfile

@@ -0,0 +1,38 @@
+FROM node:20-alpine AS base
+
+# --- Dependencies ---
+FROM base AS deps
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# --- Build ---
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npx prisma generate
+RUN npm run build
+
+# --- Production ---
+FROM base AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/prisma ./prisma
+
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+RUN mkdir -p /app/data && chown nextjs:nodejs /app/data
+
+USER nextjs
+EXPOSE 3000
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+
+CMD ["sh", "-c", "cp -n prisma/schema.prisma /app/data/ 2>/dev/null; npx prisma migrate deploy 2>/dev/null || npx prisma db push --skip-generate; node server.js"]