Architecture diagrams - custom icons

[PaulRudin]

https://mermaid.js.org/syntax/architecture.html says that you can use custom icons, but I don't quite follow the instructions.
For example google publish icons for gcp : https://cloud.google.com/icons/files/google-cloud-icons.zip - what concrete steps would I take to generate a mermaid architecture diagram using these icons?

[Aaron-von-Awesome]

I have been at this all day, and still can't seem to figure it out 😢 Any advice would be appreciated 😇