Hello 
Now, with great help from the community, I have completed keyclock authentication using Discourse OpenID Connect.
And as a next step(after completing the external keyclock authentication and return to the discourse), Skipping prompted to create a new account form.
(I referred to this post)
automatically-provision-accounts-with-external-sso-provider-skip-create-new-account-prompt
Removing the extra form was successful, but I have another problem of this.
When I login to discourse for the first time after keyclock authentication, received welcome form.
I want to remove this form.
Is there an option for this issue?
It would be helpful for me any guidance