Dockerfile

# ==============================
# STAGE 1: Build dependencies
# ==============================
FROM python:3.13-slim AS builder

WORKDIR /app

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

# Create virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt


# ==============================
# STAGE 2: Runtime image
# ==============================
FROM python:3.13-slim

WORKDIR /app

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

# Copy virtualenv from builder
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Copy application code and configuration
COPY . .


# Create non-root user
RUN useradd -m appuser
USER appuser

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s \
  CMD curl -f http://localhost:8000/health || exit 1

CMD ["uvicorn", "policygate.main:pdp_app", "--host", "0.0.0.0", "--port", "8000"]