I am looking for a feature to boot from an external volume (and not require any instance storage). This is the equivalent of an EBS only EC2 instance in AWS.
The reason I am looking for this feature is, currently, DO charges when I power off an instance and I lose data if I destroy the droplet. However, if DO had the ability to boot from an external volume, I could theoretically destroy the droplet and only retain the volume and create a new droplet when required with the same volume. That way I am only paying for storage when I don't need compute/RAM.