Dockerfile

# ==============================================================================
# DataForge: Synthetic Society & Demographic Simulation OS
# Production Dockerfile - Lightweight, Secure & Multi-Stage Optimized
# ==============================================================================

FROM python:3.12-slim AS builder

# Set build environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

WORKDIR /app

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

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

# ==============================================================================
# Final Production Runtime Stage
# ==============================================================================
FROM python:3.12-slim AS runtime

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/home/appuser/.local/bin:$PATH" \
    PORT=8000 \
    HOST=0.0.0.0

WORKDIR /app

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

# Create secure non-root user
RUN useradd -m -u 1000 appuser && \
    chown -R appuser:appuser /app

# Copy installed packages from builder
COPY --from=builder --chown=appuser:appuser /root/.local /home/appuser/.local

# Copy application source code
COPY --chown=appuser:appuser . .

# Install package in editable/local mode for CLI entrypoints
USER appuser
RUN pip install --no-cache-dir --user -e .

# Expose Web Interface & API Port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/docs || exit 1

# Launch DataForge API & Living Simulation Server
CMD ["uvicorn", "dataforge.api.app:app", "--host", "0.0.0.0", "--port", "8000"]