Generates a Google credential file based on Heroku Config Vars.
This is useful when using a package such as @google-cloud/storage which loads credentials from a file instead of an environmental variable.
GOOGLE_CREDENTIALSand paste the content of service account credential JSON file as is.
GOOGLE_APPLICATION_CREDENTIALSand set a value as
The script with generate a file called
google-credentials.json which holds the key from the step #1 above.
Copy the snippet above into CLI.