ADD some migration

db/migrate/20191220092618_add_user_ref_to_repository.rb

@@ -0,0 +1,10 @@
+class AddUserRefToRepository < ActiveRecord::Migration[5.2]
+  def change
+    add_column :repositories, :user_id, :integer
+    add_index :repositories, :user_id
+
+    Project.joins(:repository).find_each do |project|
+      project&.repository&.update_column(:user_id, project&.user_id) unless project&.repository.blank?
+    end
+  end
+end

db/migrate/20191223031855_add_gitea_uid_to_users.rb

@@ -0,0 +1,5 @@
+class AddGiteaUidToUsers < ActiveRecord::Migration[5.2]
+  def change
+    add_column :users, :gitea_uid, :integer
+  end
+end

db/migrate/20191223063139_add_mirror_url_to_repositories.rb

@@ -0,0 +1,5 @@
+class AddMirrorUrlToRepositories < ActiveRecord::Migration[5.2]
+  def change
+    add_column :repositories, :mirror_url, :string
+  end
+end