Test: minimal static file server to debug container startup

Dockerfile

@@ -2,59 +2,19 @@ FROM node:20-slim
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Build timestamp: 2026-01-13T02:15
+# Build timestamp: 2026-01-13T02:30
 
 WORKDIR /app
 
-# Install esbuild globally
-RUN npm install -g esbuild
+# Minimal test - just serve static files with Python
+RUN apt-get update && apt-get install -y python3 && rm -rf /var/lib/apt/lists/*
 
-# Copy backend package.json and install deps at root level
-COPY trigo-web/backend/package.json ./package.json
-RUN npm install --omit=dev
-
-# Also install onnxruntime-web to get WASM files
-RUN npm install onnxruntime-web@1.23.2
-
-# Copy backend source and build
-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 esbuild backend/src/server.ts --bundle --platform=node --target=node20 --format=esm \
-    --outfile=backend/dist/backend/src/server.js \
-    --external:express --external:socket.io --external:cors --external:dotenv --external:uuid
-
-# Copy frontend dist (but WASM might be LFS pointer)
+# Copy frontend dist
 COPY trigo-web/app/dist/ ./app/dist/
 
-# Copy WASM files from onnxruntime-web package (proper binary, not LFS pointer)
-RUN cp node_modules/onnxruntime-web/dist/*.wasm app/dist/assets/ 2>/dev/null || \
-    cp node_modules/onnxruntime-web/dist/*.mjs app/dist/assets/ 2>/dev/null || true
-
-# Copy env files
-COPY trigo-web/backend/.env ./backend/.env
-COPY trigo-web/backend/.env.local ./backend/.env.local
-
-# Debug: verify files exist
-RUN echo "=== Verifying files ===" && \
-    ls -la backend/dist/backend/src/ && \
-    ls -la app/dist/assets/ | head -10 && \
-    echo "=== WASM files ===" && \
-    ls -la app/dist/assets/*.wasm 2>/dev/null || echo "No wasm files" && \
-    echo "=== Node version ===" && \
-    node --version
-
-# Test that the server can be loaded (but don't actually start it during build)
-RUN node --check backend/dist/backend/src/server.js || echo "Syntax check failed"
-
 ENV PORT=7860
-ENV HOST=0.0.0.0
-ENV NODE_ENV=production
 
 EXPOSE 7860
 
-# Use shell form to see errors better
-CMD node backend/dist/backend/src/server.js
+# Test with simple Python HTTP server
+CMD cd app/dist && python3 -m http.server 7860