FROM python:3.11-slim AS base

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

WORKDIR /app

# System deps for scientific/ML stack (pandas, numpy, pillow, reportlab, etc.)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    gcc \
    ffmpeg \
    libjpeg-dev \
    zlib1g-dev \
    libpng-dev \
    libfreetype6-dev \
    && rm -rf /var/lib/apt/lists/*

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

# Copy source
COPY . .

# Sanity-check that a .env file is present before launching
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]

EXPOSE 8000