Test: Express + Socket.io server

Dockerfile

@@ -2,7 +2,7 @@ FROM node:20-slim
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Build timestamp: 2026-01-13T03:25
+# Build timestamp: 2026-01-13T03:35
 
 WORKDIR /app
 
@@ -10,13 +10,18 @@ WORKDIR /app
 COPY trigo-web/backend/package.json ./package.json
 RUN npm install --omit=dev
 
-# Create a simple test server to verify Express works
+# Create a test server with Express + Socket.io
 RUN echo 'import express from "express"; \
+import { createServer } from "http"; \
+import { Server } from "socket.io"; \
 const app = express(); \
+const httpServer = createServer(app); \
+const io = new Server(httpServer, { cors: { origin: true } }); \
 const port = process.env.PORT || 7860; \
 app.use(express.static("app/dist")); \
 app.get("/health", (req, res) => res.json({status: "ok"})); \
-app.listen(port, "0.0.0.0", () => console.log("Server running on port " + port));' > server.js
+io.on("connection", (socket) => console.log("Client connected:", socket.id)); \
+httpServer.listen(port, "0.0.0.0", () => console.log("Server running on port " + port));' > server.js
 
 # Copy frontend dist
 COPY trigo-web/app/dist/ ./app/dist/