Cloud Run - Generation1 support #75
Description
Is your feature request related to a problem? Please describe.
Reading the sys directory is not supported under cloud run v1. Therefore when running on cloud run the default_provider function returns the expect from the example.
Under cloud run v2 it works as expected returning google compute engine.
Describe the solution you'd like
Have a fallback option to try and call the metadata server directly?
Additional context
Google docs
Using examples/default_creds_id_token.rs and the default_provider function