Dockerfile

# ==============================================================================
# LedgerX Production Dockerfile
# Multi-stage build for minimal image size and security
# ==============================================================================

# Stage 1: Builder
FROM python:3.11-slim as builder

WORKDIR /app

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

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

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


# Stage 2: Production
FROM python:3.11-slim as production

# Security: Run as non-root user
RUN groupadd -r ledgerx && useradd -r -g ledgerx ledgerx

WORKDIR /app

# Install runtime dependencies only
RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq5 \
    curl \
    && rm -rf /var/lib/apt/lists/*

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

# Copy application code
COPY --chown=ledgerx:ledgerx app/ ./app/
COPY --chown=ledgerx:ledgerx alembic/ ./alembic/
COPY --chown=ledgerx:ledgerx alembic.ini ./

# Switch to non-root user
USER ledgerx

# Environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PYTHONPATH=/app

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health || exit 1

# Expose port
EXPOSE 8000

# Run the application
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]


# Stage 3: Development (optional)
FROM production as development

USER root

# Install development dependencies
RUN pip install --no-cache-dir \
    pytest \
    pytest-asyncio \
    pytest-cov \
    httpx \
    ruff \
    mypy

USER ledgerx

# Enable reload for development
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]