Create Dockerfile

Dockerfile

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+# Dockerfile
+FROM node:20-slim
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    python3 \
+    make \
+    g++ \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy backend files
+COPY backend/package*.json ./backend/
+WORKDIR /app/backend
+RUN npm install --production
+
+# Copy backend source
+COPY backend/ ./
+
+# Copy frontend files  
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+RUN npm install
+
+# Copy frontend source and build
+COPY frontend/ ./
+RUN npm run build
+
+# Back to app root
+WORKDIR /app
+
+# Expose port 7860 (required by Hugging Face)
+EXPOSE 7860
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:7860/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
+
+# Start the application
+CMD ["node", "backend/server.js"]