move more fully to runtime config with release, improved docker build, updated phx liveview js

lib/shift73k/mailer/user_email.ex

@@ -1,16 +1,13 @@
 defmodule Shift73k.Mailer.UserEmail do
   import Swoosh.Email
+  import Shift73k, only: [get_app_mailer_from: 0, get_app_mailer_reply_to: 0]
 
-  @mailer_vars Application.compile_env(:shift73k, :app_global_vars,
-                 mailer_reply_to: "admin@example.com",
-                 mailer_from: {"Shift73k", "shift73k@example.com"}
-               )
 
   def compose(user_email, subject, body_text) do
     new()
-    |> from(@mailer_vars[:mailer_from])
+    |> from(get_app_mailer_from())
     |> to(user_email)
-    |> header("Reply-To", @mailer_vars[:mailer_reply_to])
+    |> header("Reply-To", get_app_mailer_reply_to())
     |> subject(subject)
     |> text_body(body_text)
   end

lib/shift73k/release.ex

@@ -0,0 +1,28 @@
+defmodule Shift73k.Release do
+  @moduledoc """
+  Used for executing DB release tasks when run in production without Mix
+  installed.
+  """
+  @app :shift73k
+
+  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

lib/shift73k/shifts/templates/shift_template.ex

@@ -1,7 +1,7 @@
 defmodule Shift73k.Shifts.Templates.ShiftTemplate do
   use Ecto.Schema
   import Ecto.Changeset
-  import Shift73k, only: [app_time_zone: 0]
+  import Shift73k, only: [get_app_time_zone: 0]
 
   alias Shift73k.Shifts
   alias Shift73k.Shifts.Templates.ShiftTemplate
@@ -12,7 +12,7 @@ defmodule Shift73k.Shifts.Templates.ShiftTemplate do
     field :subject, :string
     field :description, :string
     field :location, :string
-    field :time_zone, :string, default: app_time_zone()
+    field :time_zone, :string, default: get_app_time_zone()
     field :time_start, :time, default: ~T[09:00:00]
     field :time_end, :time, default: ~T[17:00:00]