fix for elixir 1.11

load runtime configs in releases with config provider

lib/pleroma/config/release_runtime_provider.ex

@@ -0,0 +1,50 @@
+defmodule Pleroma.Config.ReleaseRuntimeProvider do
+  @moduledoc """
+  Imports `runtime.exs` and `{env}.exported_from_db.secret.exs` for elixir releases.
+  """
+  @behaviour Config.Provider
+
+  @impl true
+  def init(opts), do: opts
+
+  @impl true
+  def load(config, _opts) do
+    with_defaults = Config.Reader.merge(config, Pleroma.Config.Holder.release_defaults())
+
+    config_path = System.get_env("PLEROMA_CONFIG_PATH") || "/etc/pleroma/config.exs"
+
+    with_runtime_config =
+      if File.exists?(config_path) do
+        runtime_config = Config.Reader.read!(config_path)
+
+        with_defaults
+        |> Config.Reader.merge(pleroma: [config_path: config_path])
+        |> Config.Reader.merge(runtime_config)
+      else
+        warning = [
+          IO.ANSI.red(),
+          IO.ANSI.bright(),
+          "!!! #{config_path} not found! Please ensure it exists and that PLEROMA_CONFIG_PATH is unset or points to an existing file",
+          IO.ANSI.reset()
+        ]
+
+        IO.puts(warning)
+        with_defaults
+      end
+
+    exported_config_path =
+      config_path
+      |> Path.dirname()
+      |> Path.join("prod.exported_from_db.secret.exs")
+
+    with_exported =
+      if File.exists?(exported_config_path) do
+        exported_config = Config.Reader.read!(with_runtime_config)
+        Config.Reader.merge(with_runtime_config, exported_config)
+      else
+        with_runtime_config
+      end
+
+    with_exported
+  end
+end