Dockerfile

# Multi-stage Dockerfile for Data Cellar connector healthcheck script
# Stage 1: Builder - Install dependencies
FROM python:3.11-slim AS builder

# Set working directory
WORKDIR /app

# Install uv for faster dependency resolution
COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv

# Set environment variables for Python optimization
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    UV_COMPILE_BYTECODE=1 \
    UV_LINK_MODE=copy

# Copy dependency files
COPY pyproject.toml uv.lock ./

# Install dependencies into a virtual environment
RUN uv sync --frozen --no-dev --no-install-project

# Copy application code
COPY main.py ./

# Stage 2: Runtime - Minimal production image
FROM python:3.11-slim AS runtime

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/app/.venv/bin:$PATH"

# Copy virtual environment from builder
COPY --from=builder /app/.venv /app/.venv

# Copy application code
COPY main.py ./

# Set entrypoint to run the script
ENTRYPOINT ["python", "main.py"]

# Default command (can be overridden)
CMD ["--help"]