Test: simple Express ESM server to verify module resolution

Dockerfile

@@ -2,42 +2,28 @@ FROM node:20-slim
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Build timestamp: 2026-01-13T03:05
+# Build timestamp: 2026-01-13T03:25
 
 WORKDIR /app
 
-# Install esbuild globally
-RUN npm install -g esbuild
-
-# Copy backend package.json and install deps for bundling
+# Copy backend package.json and install deps
 COPY trigo-web/backend/package.json ./package.json
-RUN npm install
-
-# Copy backend source
-RUN mkdir -p backend backend/dist/backend/src
-COPY trigo-web/backend/src/ ./backend/src/
-
-# Copy inc folder (needed for esbuild)
-COPY trigo-web/inc/ ./inc/
+RUN npm install --omit=dev
 
-# Bundle EVERYTHING into one file (no external deps)
-RUN esbuild backend/src/server.ts --bundle --platform=node --target=node20 --format=esm \
-    --outfile=backend/dist/backend/src/server.js
+# Create a simple test server to verify Express works
+RUN echo 'import express from "express"; \
+const app = express(); \
+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
 
 # Copy frontend dist
 COPY trigo-web/app/dist/ ./app/dist/
 
-# Copy env files
-COPY trigo-web/backend/.env ./backend/.env
-COPY trigo-web/backend/.env.local ./backend/.env.local
-
-# Verify server file
-RUN ls -la backend/dist/backend/src/server.js
-
 ENV PORT=7860
-ENV HOST=0.0.0.0
 ENV NODE_ENV=production
 
 EXPOSE 7860
 
-CMD ["node", "backend/dist/backend/src/server.js"]
+CMD ["node", "server.js"]