fix: 对齐 no-whatever 验证过的 Dockerfile

- 构建时 DATABASE_URL 改回相对路径 file:./template.db
- COPY 从 prisma/template.db 取文件（Prisma 6 实际生成位置）

Dockerfile

@@ -15,7 +15,7 @@ WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 RUN npx prisma generate
-ENV DATABASE_URL="file:/app/template.db"
+ENV DATABASE_URL="file:./template.db"
 RUN npx prisma db push
 RUN npm run build
 
@@ -28,7 +28,7 @@ RUN adduser --system --uid 1001 nextjs
 
 COPY --from=builder /app/public ./public
 COPY --from=builder /app/prisma ./prisma
-COPY --from=builder /app/template.db ./template.db
+COPY --from=builder /app/prisma/template.db ./template.db
 
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static