text: """
  Integration with Docker (and Compose and Swarm).
  
  Here is currently just a method for getting secrets.
  """
  
  from pathlib import Path
  from typing import Optional
  
  
  def secret(
          name: str, secrets_dir: Path = Path("/run/secrets")
  ) -> Optional[str]:
      """Load the named secret from /run/secrets and return None otherwise."""
      path = secrets_dir / name
      if path.exists():
          return path.read_text().strip()
      return None
  