# Arbiter Dockerfile
# Multi-stage build for smaller final image

FROM python:3.12-slim as builder

WORKDIR /app

# Install build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
COPY pyproject.toml ./
RUN pip install --no-cache-dir build && \
    pip wheel --no-cache-dir --wheel-dir /wheels -e .

# Final stage
FROM python:3.12-slim

WORKDIR /app

# Install runtime dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq5 \
    && rm -rf /var/lib/apt/lists/* \
    && useradd --create-home --shell /bin/bash arbiter

# Copy wheels and install
COPY --from=builder /wheels /wheels
RUN pip install --no-cache-dir /wheels/* && rm -rf /wheels

# Copy application
COPY src/ ./src/
COPY templates/ ./templates/
COPY alembic.ini ./

# Set ownership
RUN chown -R arbiter:arbiter /app

USER arbiter

# Environment
ENV PYTHONPATH=/app/src \
    PYTHONUNBUFFERED=1 \
    ARBITER_TEMPLATES_DIR=/app/templates

# Default command (API server)
CMD ["uvicorn", "arbiter.main:app", "--host", "0.0.0.0", "--port", "8000"]

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')"