Requirements and recommendations for enabling TOTP on a Domino server on Docker are as follows.

• Create or replicate an ID vault on the Domino on Docker server. All TOTP-specific configuration is saved in users' ID vault documents.
• Make sure that the web sites or virtual servers that run within the Docker container are accessible from outside the container.
• We recommend running the Domino HTTP server with a default Internet site, TLS enabled, and Server Name Indication (SNI) enabled to connect to a web site or host name. For more information on SNI, see https://help.hcltechsw.com/domino/11.0.1/admin/wn_domino_sni.html in the Domino documentation.