Gigalixir config not supporting SSL?

Thank you but my configuration still does not work I think. When custom domain is added, there is no example in the documentations for what the config must be. Is gigalixir domains:add alone enough?

I am still confused. From previous post, I am understanding that Gigalixir forwards requests and our apps must only listen on PORT… but why do some examples also listen on 443? I feel that this example of custom domain configuration is very much missing from the doc page or maybe I cannot find it?

also maybe GoDaddy is not possible to use with Gigalixir for custom domains?