generate

type GenerateOptions struct {
	IOStreams *iostreams.IOStreams
	Config    func() (config.Config, error)
	Logger    func() (*logger.Logger, error)

	Versions  []string // Positional args: version patterns
	SkipFetch bool
	Cleanup   bool
	OutputDir string // Output directory for versions.json (Dockerfiles always go to cfg.DockerfilesSubdir())
}