Dex does not support SSO

[antoinetran]

Hi,

I deployed Argo workflows with Dex and a LDAP connector. Everything is working fine. However, after connecting Dex with another application (Nextcloud), I found out that we cannot avoid retyping the LDAP password when logging in both app.
Reading dex issue dexidp/dex#32 and dexidp/dex#963 let me believe the term SSO is not supported on Dex side.

Reading SSO meaning in Wikipedia:

Single sign-on (SSO) is an authentication scheme that allows a user to log in with a single ID to any of several related, yet independent, software systems.

True single sign-on allows the user to log in once and access services without re-entering authentication factors.

I would like to confirm with you that Argo use of SSO in its doc means only that we use a centralized authentication mean, but not in the true SSO meaning of avoiding retyping the password?

If yes, I think it would be great to add a clarification on doc explaining that. I spent some time integrating Nextcloud with Dex, while it already supported LDAP directly and its implementation is better.