Create Dockerfile

Dockerfile

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+# Step 1: Build Frontend
+FROM node:20 AS frontend-builder
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+RUN npm run build
+
+# Step 2: Final Image
+FROM python:3.11-slim
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy backend requirements first for better caching
+COPY backend/requirements.txt ./backend/
+RUN pip install --no-cache-dir -r backend/requirements.txt
+
+# Copy backend code and scripts
+COPY backend ./backend
+COPY scripts ./scripts
+
+# Copy built frontend from Stage 1
+COPY --from=frontend-builder /app/build ./build
+
+# Environment variables setup (can be overridden in HF)
+ENV PORT=7860
+ENV PYTHONPATH=/app/backend
+
+# Expose the standard HF Space port
+EXPOSE 7860
+
+# Command to run the unified application
+CMD ["python", "backend/main.py"]