Interact with DigitalOcean using doctl.
For example:
MYDOTOKEN=put-your-digitalocean-api-token-here
docker run --rm -e DIGITALOCEAN_ACCESS_TOKEN="$MYDOTOKEN" dcycle/doctl:1 --help
docker run --rm -e DIGITALOCEAN_ACCESS_TOKEN="$MYDOTOKEN" dcycle/doctl:1 compute droplet list --output=json