$ terraform plan -out digitalocean-plan
 Refreshing Terraform state in-memory prior to plan...
 [...]
 An execution plan has been generated and is shown below.
 Resource actions are indicated with the following symbols:
   + create
 Terraform will perform the following actions:
   + digitalocean_droplet.mywebapp
       id:                   <computed>
       image:                "docker-16-04"
 [...]
   + digitalocean_ssh_key.jondoe
       id:                   <computed>
       name:                 "Key von Jon"
 [...]
 Plan: 2 to add, 0 to change, 0 to destroy.