Config Issue For Google Auth Guide

[osscontributor]

https://guides.micronaut.io/latest/micronaut-oauth2-oidc-google-gradle-java.html

When I follow the instructions in that guide up to the suggestion of running ./gradlew run the app fails to start.

I think the issue is that OAUTH_ISSUER is not set. In the downloadable source code micronaut.security.oauth2.clients.default.openid.issue has a value of https://accounts.google.com in src/main/resources/application.yml but in src/main/resources/application-dev.yml the value is ${OAUTH_ISSUER}.