If any Pod running in our K8s cluster needs outbound Internet access, then it must configure this proxy as env variables --> HTTP_PROXY, HTTPS_PROXY and NO_PROXY
When using the auth-service, the first redirection to our Azure AD IdP is actually performed by the browser, so there is no issue here
However, when the auth-service needs to exchange the authorization code for the access token, then it cannot due to not being able to access the Internet
From a Slack conversation with Enrique Medina Montenegro.