# Start from a Python base image
FROM python:3.9-slim

# Install the GNU C++ compiler (g++)
# build-essential is a common package that includes g++, make, and other tools
RUN apt-get update && apt-get install -y g++

# Set the working directory inside the container
WORKDIR /app

# Copy the requirements file and install Python packages
# (This file will be the same as your Java project)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy your application code
COPY app.py .

# Expose the port the app runs on (standard for HF Spaces)
EXPOSE 7860

# Command to run the Flask application
CMD ["python", "app.py"]