As discussed on slack:

• New interactive prompts:
  • Pipeline version (-r) - get available tags from remote repo after name supplied, questionary select list
  • Download singularity or not (rich confirm).
    • Currently this is --singularity, but I think we should change to --container (eg. --container none, --container singularity). Should only allow those two values for now.
  • Move singularity images to folder or not (--singularity-cache). Rich prompt. Default no (copy files). Needs new negative cli flag too.
  • Compress output or not (--compression) - questionary select list. none as first option.

For more complex one that maybe needs thought

• Use singularity cache
  • More complex - could maybe append export NXF_SINGULARITY_CACHEDIR to the .bashrc file if not there?