FROM python:3.12-slim AS base

WORKDIR /app

# Install system deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

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

# Copy source
COPY src/ ./src/

# Non-root user
RUN useradd -m appuser && chown -R appuser:appuser /app
USER appuser

EXPOSE 8000

CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8000"]