i can´t use an api in 000webhost code example

Example 1: how do i update my gatsby version?

npm i gatsby@latest

Example 2: how do I add index's to a migration in rails

rails generate migration AddUser_idColumnToTable user_id:string. 

class AddIndexToTable < ActiveRecord::Migration
  def change
    add_index :table, :user_id
  end
end