# Use official Python base image
FROM python:3.10-slim

# Prevent Python from writing .pyc files & enable buffered output
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Set working directory
WORKDIR /app

# Install system dependencies (useful for pandas, numpy, etc.)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    git \
    && rm -rf /var/lib/apt/lists/*

# Copy requirement file
COPY requirements.txt .

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application files
COPY . .

# Expose port (Hugging Face expects 7860 by default, but Flask usually runs 5000)
EXPOSE 7860

# Set environment variable for Flask
ENV PORT=7860
ENV FLASK_APP=app.py

# Run Flask
CMD ["flask", "run", "--host", "0.0.0.0", "--port", "7860"]