blockscout/apps/explorer/config/prod.exs

use Mix.Config

# Configures the database
config :explorer, Explorer.Repo,
  adapter: Ecto.Adapters.Postgres,
  url: System.get_env("DATABASE_URL"),
  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
  ssl: String.equivalent?(System.get_env("ECTO_USE_SSL") || "true", "true"),
  prepare: :unnamed,
  timeout: 60_000

config :logger, :explorer,
  level: :info,
  path: "logs/prod/explorer.log"

variant =
  if is_nil(System.get_env("ETHEREUM_JSONRPC_VARIANT")) do
    "parity"
  else
    System.get_env("ETHEREUM_JSONRPC_VARIANT")
    |> String.split(".")
    |> List.last()
    |> String.downcase()
  end

# Import variant specific config. This must remain at the bottom
# of this file so it overrides the configuration defined above.
import_config "prod/#{variant}.exs"