Edeliver Starting Phoenix/Elixir App on Random TCP Port
It looks to me like you didn't read the Phoenix documentation for deploying via releases. Distillery also has documentation for this.
In a gist, this is what you need in your config:
config :healthlocker, Healthlocker.Endpoint server: true, root: ".", version: Mix.Project.config[:version]Ensure those three config options are set in your prod config.exs file, and you should be good to go.