add contexts

priv/repo/migrations/20220726001039_create_contexts.exs

@@ -0,0 +1,15 @@
+defmodule Memex.Repo.Migrations.CreateContexts do
+  use Ecto.Migration
+
+  def change do
+    create table(:contexts, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :title, :string
+      add :content, :text
+      add :tag, {:array, :string}
+      add :visibility, :string
+
+      timestamps()
+    end
+  end
+end