rails--rails/activestorage/test/service/configurations.example.yml

# s3:
#   service: S3
#   access_key_id: ""
#   secret_access_key: ""
#   region: ""
#   bucket: ""
#
# gcs:
#   service: GCS
#   credentials: {
#     type: "service_account",
#     project_id: "",
#     private_key_id: "",
#     private_key: "",
#     client_email: "",
#     client_id: "",
#     auth_uri: "https://accounts.google.com/o/oauth2/auth",
#     token_uri: "https://accounts.google.com/o/oauth2/token",
#     auth_provider_x509_cert_url: "https://www.googleapis.com/oauth2/v1/certs",
#     client_x509_cert_url: ""
#   }
#   project:
#   bucket:
#
# azure:
#   service: AzureStorage
#   storage_account_name: ""
#   storage_access_key: ""
#   container: ""