Dockerfile

# Build stage
FROM python:3.11-slim as builder

# Install build dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy dependency files
COPY pyproject.toml README.md ./

# Create a minimal setup for building
RUN mkdir -p src/otel_query_server && \
    echo "__version__ = '0.1.0'" > src/otel_query_server/__init__.py

# Install dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir build && \
    python -m build --wheel && \
    pip install --no-cache-dir dist/*.whl

# Runtime stage
FROM python:3.11-slim

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user
RUN useradd -m -u 1000 -s /bin/bash mcpuser

# Set working directory
WORKDIR /app

# Copy installed packages from builder
COPY --from=builder /usr/local/lib/python3.11/site-packages /usr/local/lib/python3.11/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Copy application code
COPY --chown=mcpuser:mcpuser src/ ./src/
COPY --chown=mcpuser:mcpuser examples/config.yaml ./config.yaml.example

# Create necessary directories
RUN mkdir -p /app/logs /app/cache && \
    chown -R mcpuser:mcpuser /app

# Switch to non-root user
USER mcpuser

# Set environment variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    OTEL_QUERY_SERVER__LOG_LEVEL=INFO

# Expose MCP server port (if using HTTP transport)
EXPOSE 8080

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import sys; sys.exit(0)"

# Default command
ENTRYPOINT ["python", "-m", "otel_query_server.server"]
CMD ["--config", "/app/config.yaml"]