add container tags

priv/repo/migrations/20210912224533_create_container_tags.exs

@@ -0,0 +1,17 @@
+defmodule Cannery.Repo.Migrations.CreateContainerTags do
+  use Ecto.Migration
+
+  def change do
+    create table(:container_tags, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+
+      add :container_id, references(:containers, on_delete: :delete_all, type: :binary_id)
+      add :tag_id, references(:tags, on_delete: :delete_all, type: :binary_id)
+
+      timestamps()
+    end
+
+    create index(:container_tags, [:container_id])
+    create index(:container_tags, [:tag_id])
+  end
+end