LINE Bot 部署，
說一句就有 webhook。

Dockerfile

FROM node:22-slim
WORKDIR /app
COPY package*.json ./
RUN npm ci --omit=dev          # @line/bot-sdk, express
COPY . .
USER node
EXPOSE 8080
CMD ["node", "server.js"]

// server.js
// const line = require("@line/bot-sdk");
// const express = require("express");
// const config = { channelSecret: process.env.LINE_CHANNEL_SECRET };
// const client = new line.messagingApi.MessagingApiClient({
//   channelAccessToken: process.env.LINE_CHANNEL_ACCESS_TOKEN });
// const app = express();
// app.post("/webhook", line.middleware(config), async (req, res) => {
//   res.sendStatus(200);   // answer LINE first, then work
//   for (const e of req.body.events) if (e.type === "message")
//     await client.replyMessage({ replyToken: e.replyToken,
//       messages: [{ type: "text", text: e.message.text }] });
// });
// app.listen(process.env.PORT);

• LINE_CHANNEL_SECRET Basic settings；驗證請求來自 LINE
• LINE_CHANNEL_ACCESS_TOKEN Messaging API；回覆和推播用
• PORT 平台給的通訊埠

跟 AI 工具說這一句

讀 https://app.agentlab.cresclab.com/agent/deploy.md，把這個 LINE Bot 部署到 Agent Lab：照 agentlab.cresclab.com/deploy/line-bot 的 Dockerfile，伺服器聽 $PORT、webhook 路徑 /webhook。LINE_CHANNEL_SECRET 和 LINE_CHANNEL_ACCESS_TOKEN 告訴我去主控台哪裡填，不要在對話裡跟我要。建置完成給我 webhook 網址。