Make sure that the following values are in your containers environment:
DREAMHOST_API_KEY
DOMAIN_NAMES
For DOMAIN_NAMES they should be separated by a colon
Example for DOMAIN_NAMES
would be
DOMAIN_NAMES=test.example.com:subdomain.example.com:example.com
Note: This is designed to update the DNS to be your public IP from whever this is run ... such as in a homelab for instance :)
References:
https://help.dreamhost.com/hc/en-us/articles/216944818-API-Apps
https://github.com/gsiametis/dreampy_dns/