# Hugging Face Space - Docker SDK
FROM python:3.10-slim

ENV PIP_NO_CACHE_DIR=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    GRADIO_SERVER_NAME=0.0.0.0

# System deps (build tools for scientific packages)
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Python deps
COPY requirements.txt /app/requirements.txt
RUN pip install --upgrade pip && pip install -r requirements.txt

# Copy app
COPY app.py /app/app.py

EXPOSE 7860

# HF Spaces passes $PORT; app.py reads it
CMD ["python", "app.py"]