Update Dockerfile

Dockerfile

@@ -1,11 +1,21 @@
+# ---------- Frontend build ----------
+FROM node:18 AS frontend-builder
+WORKDIR /frontend
+COPY frontend/package*.json ./
+RUN npm ci
+COPY frontend .
+RUN npm run build
+
+# ---------- Backend build ----------
 FROM python:3.11-slim
 
 # Set environment variables
 ENV PYTHONUNBUFFERED=1
 ENV PYTHONPATH=/app
-ENV PORT=8000
+ENV PORT=8080
 ENV MODEL_NAME=microsoft/Phi-3.5-mini-instruct
 ENV LOG_LEVEL=INFO
+ENV RAILWAY_ENVIRONMENT=production
 
 # Install system dependencies
 RUN apt-get update && apt-get install -y \
@@ -19,14 +29,18 @@ WORKDIR /app
 
 # Copy requirements first for better caching
 COPY requirements.txt .
+RUN pip install --upgrade pip && pip install -r requirements.txt
 
-# Install Python dependencies
-RUN pip install --upgrade pip
-RUN pip install -r requirements.txt
+# Copy scripts first (so model can download before code changes)
+COPY scripts/download_model.py ./scripts/
+RUN python scripts/download_model.py
 
-# Copy application code
+# Copy all backend code
 COPY . .
 
+# Copy built frontend assets from Node stage
+COPY --from=frontend-builder /frontend/dist ./static
+
 # Create necessary directories
 RUN mkdir -p models logs static
 
@@ -35,12 +49,12 @@ RUN useradd -m -u 1000 saemsai
 RUN chown -R saemsai:saemsai /app
 USER saemsai
 
-# Expose port
-EXPOSE 8000
+# Expose port (MUST MATCH RAILWAY CONFIG)
+EXPOSE 8080
 
-# Health check
+# Health check (uses internal port)
 HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
-    CMD curl -f http://localhost:8000/health || exit 1
+    CMD curl -f http://localhost:8080/api/health || exit 1
 
 # Start application
-CMD ["python", "railway_app.py"]
+CMD ["python", "railway_app.py"]