Rclone を Google Cloud Storage から使う
rclone config で設定できるが、インタラクティブに設定するのもめんどうなので。
code:.config/rclone/rclone.conf
type = google cloud storage
object_acl = private
location = asia-northeast1
project_number = projectnumber
service_account_file = projectnumber.json
bucket_acl = private
bucket_policy_only = true