Update Dockerfile

Dockerfile

@@ -1,19 +1,22 @@
-# Use a slim Python image
+# Use a lightweight Python base image
 FROM python:3.9-slim
 
-# Set working directory
+# Set working directory inside container
 WORKDIR /app
 
-# Copy requirements and install
+# Install system-level dependencies (for pandas, scikit-learn)
+RUN apt-get update && apt-get install -y build-essential && rm -rf /var/lib/apt/lists/*
+
+# Copy and install Python dependencies
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy app and model
+# Copy app code and trained model
 COPY app.py .
 COPY superkart_sales_forecast.pkl .
 
-# Expose the port Hugging Face requires
+# Expose port expected by Hugging Face Spaces
 EXPOSE 7860
 
-# Run the Flask app
-CMD ["python", "app.py"]
+# Start the Flask app
+CMD ["python", "app.py"]