Add NODE_ENV environment variable to Dockerfile and update HOST const…

…ant in constants.ts

Dockerfile

@@ -2,6 +2,8 @@ FROM node:20
 
 WORKDIR /usr/src/app
 
+ENV NODE_ENV=production
+
 COPY package*.json ./
 
 RUN npm install

constants.ts

@@ -26,5 +26,5 @@ export const CLONE_BOT_BUTTON = {
     url: "https://telegra.ph/Create-Your-Own-Lemonic-Bot-A-Step-by-Step-Guide-12-16",
 };
 
-export const HOST = process.env.HOST || "0.0.0.0";
+export const HOST = process.env.HOST ? process.env.HOST : process.env.NODE_ENV === "production" ? "0.0.0.0" : "localhost";
 export const PORT = process.env.PORT ? parseInt(process.env.PORT) : 3000;

index.ts

@@ -42,13 +42,14 @@ app.all("*", async (req: Request, res: Response) => {
 });
 
 app.listen(PORT, HOST, () => {
+    console.log(`Server listening on http://${HOST}:${PORT}`);
+
     if (!WEBHOOK_URL && !BOT_TOKEN) {
-        console.error("WEBHOOK_URL or BOT_TOKEN not set");
-        process.exit(1);
+        console.warn("WEBHOOK_URL or BOT_TOKEN not set in .env file, new bot cannot be created");
     }
 
     if (!WEBHOOK_URL && BOT_TOKEN) {
-        console.info("Webhook URL not set, starting bot only using polling");
+        console.info("Webhook URL not set, starting bot using polling");
         const bot = botCreator(BOT_TOKEN);
         run(bot);
     } else if (WEBHOOK_URL && !BOT_TOKEN) {