livebook/config/runtime.exs

import Config

if config_env() == :prod do
  # secret_key_base =
  #   System.get_env("SECRET_KEY_BASE") ||
  #     raise """
  #     environment variable SECRET_KEY_BASE is missing.
  #     You can generate one by calling: mix phx.gen.secret
  #     """

  # config :livebook, LivebookWeb.Endpoint,
  #   http: [
  #     # Enable IPv6 and bind on all interfaces.
  #     # Set it to  {0, 0, 0, 0, 0, 0, 0, 1} for local network only access.
  #     ip: {0, 0, 0, 0, 0, 0, 0, 0},
  #     port: String.to_integer(System.get_env("PORT") || "4000")
  #   ],
  #   secret_key_base: secret_key_base
end