toy/config/runtime.exs

import Config
alias Config.Helper

# config/runtime.exs is executed for all environments, including
# during releases. It is executed after compilation and before the
# system starts, so it typically used load production configuration
# and secrets from environment variables or elsewhere. Do not define
# any compile-time configuration in here, as it won't be applied.
# The block below contains prod specific runtime configuration.
if config_env() == :prod do
  env =
    Helper.load_all([
      {"SECRET_KEY_BASE", "You can generate one by calling: mix phx.gen.secret"},
      {"DATABASE_URL", "For example: ecto://USER:PASS@HOST/DATABASE"},
      "PORT",
      "HOST"
    ])

  config :toy, ToyWeb.Endpoint,
    url: [host: env.host, port: env.port],
    http: [
      # Enable IPv6 and bind on all interfaces.
      # Set it to  {0, 0, 0, 0, 0, 0, 0, 1} for local network only access.
      # See the documentation on https://hexdocs.pm/plug_cowboy/Plug.Cowboy.html
      # for details about using IPv6 vs IPv4 and loopback vs public addresses.
      ip: {0, 0, 0, 0, 0, 0, 0, 0},
      port: env.port
    ],
    secret_key_base: env.secret_key_base,
    server: true

  config :toy, Toy.Repo,
    # ssl: true,
    url: env.database_url,
    pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10")
end