Every HA addon is itself a docker container. So if you are running HA in docker, you just have to find the ‘normal’ docker container of the addon you want and spin it up. I’m running containers for MariaDB, grafana, influxdb, ESPHome, zigbee2mqtt, zwavejsui, mosquito, etc…. They all interface with the HA docker container.
thanks for the reply, I think this is beyond my capabilities 