changes to facilitate deployment on render.com

build.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+# exit on error
+set -o errexit
+
+# Initial setup
+mix deps.get --only prod
+MIX_ENV=prod mix compile
+
+MIX_ENV=prod mix assets.build
+MIX_ENV=prod mix assets.deploy
+
+MIX_ENV=prod mix phx.gen.release
+MIX_ENV=prod mix release --overwrite

config/runtime.exs

@@ -48,7 +48,7 @@ if config_env() == :prod do
       You can generate one by calling: mix phx.gen.secret
       """
 
-  host = System.get_env("PHX_HOST") || "example.com"
+  host = System.get_env("RENDER_EXTERNAL_HOSTNAME") || "localhost"
   port = String.to_integer(System.get_env("PORT") || "4000")
 
   config :ppr_api, :dns_cluster_query, System.get_env("DNS_CLUSTER_QUERY")

lib/ppr_api/release.ex

@@ -0,0 +1,28 @@
+defmodule PprApi.Release do
+  @moduledoc """
+  Used for executing DB release tasks when run in production without Mix
+  installed.
+  """
+  @app :ppr_api
+
+  def migrate do
+    load_app()
+
+    for repo <- repos() do
+      {:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :up, all: true))
+    end
+  end
+
+  def rollback(repo, version) do
+    load_app()
+    {:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :down, to: version))
+  end
+
+  defp repos do
+    Application.fetch_env!(@app, :ecto_repos)
+  end
+
+  defp load_app do
+    Application.load(@app)
+  end
+end