# DTO Framework Docker Image
# Multi-stage build for Data Transfer Operations

FROM python:3.10-slim as builder

# Install build dependencies
RUN apt-get update && apt-get install -y \
    curl \
    git \
    build-essential \
    && 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 -r requirements.txt

# Runtime stage
FROM python:3.10-slim as runtime

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    curl \
    git \
    fuse \
    rsync \
    && rm -rf /var/lib/apt/lists/*

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

# Create DTO user
RUN groupadd -r dto && useradd -r -g dto -d /app dto

# Create application directory
WORKDIR /app

# Copy DTO framework
COPY . .

# Set permissions
RUN chown -R dto:dto /app
USER dto

# Expose metrics port
EXPOSE 9090

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:9090/health || exit 1

# Default command
CMD ["python", "services/dto_service_manager.py"]