examples/hello_phoenix/config/runtime.exs
import Config
if config_env() == :prod do
host = System.get_env("PHX_HOST") || "localhost"
port = String.to_integer(System.get_env("PORT") || "4000")
secret_key_base = System.fetch_env!("SECRET_KEY_BASE")
config :hello_phoenix, HelloPhoenixWeb.Endpoint,
url: [host: host, port: 443, scheme: "https"],
http: [ip: {127, 0, 0, 1}, port: port],
secret_key_base: secret_key_base,
server: true
end