2 Answers
I was going to write the explanation out for you, but then realized that you would learn more by reading the source documentation.
– https://www.google.com/search?q=GCP+GCE+add+access+scope+for+storage
🙂
There are 2 ways, one of which is in beta version.
gcloud compute instances set-service-account –help
gcloud beta compute instances set-scopes –help