This pull request add and optional logout menu entry, configured by two configuration variables in the [web] section:

• logout_url: the target URL of the logout menu entry
• logout_text: the displayed text in the logout menu entry

Please note that the link will not perform any logout by itself. I is the responsibility of the system administrator to make something useful out of the link.

For instance, when running dns-ui behind Nginx as a reverse proxy (using the auth_request module) , with oauth2-proxy and Keycloak OIDC as authentication client, the following snippets can be useful:

In Nginx config:

location /logout {
	return 302 http://<url_of_your_openauth2_proxy_instance>/sign_out?rd=<url_of_page_to_display_after_logout>;
}

In oauth2-proxy config:

backend_logout_url="http://<url_of_your_keycloak_instance>/realms/<realm_name>/protocol/openid-connect/logout?id_token_hint={id_token}"