Could not get token endpoint

[sigau]

Hi I'm attempting to utilize oidc-gen in order to acquire an IAM access token from a CLI. My intention is to then employ this token for API usage within our docker-based instance. However, when executing the command:

oidc-gen -w device iam

Issuer: https://ccosfip00374.in2p3.fr/

I encounter the subsequent error message:

"Error encountered while attempting to retrieve supported scopes for 'https://ccosfip00374.in2p3.fr/': The configuration endpoint failed to provide the token endpoint. This issue could stem from a network connectivity problem, although it's more likely that the provided issuer is incorrect."

I have also tried performing this action using our previous RPM-based IAM instance, which proved successful. Is there an additional step required when utilizing the docker instance? Perhaps the addition of a line in an environment file or a similar configuration adjustment?

Thank you for your valuable assistance. Gautier