Fix indexes in container repositories table

db/migrate/20170322013926_create_container_repository.rb

@@ -5,13 +5,12 @@ class CreateContainerRepository < ActiveRecord::Migration
 
   def change
     create_table :container_repositories do |t|
-      t.references :project, foreign_key: true, null: false
+      t.references :project, foreign_key: true, index: true, null: false
       t.string :name, null: false
 
       t.timestamps null: false
     end
 
-    add_index :container_repositories, :project_id
     add_index :container_repositories, [:project_id, :name], unique: true
   end
 end

spec/models/container_repository_spec.rb

@@ -21,13 +21,6 @@ describe ContainerRepository do
         headers: { 'Content-Type' => 'application/json' })
   end
 
-  describe 'validations' do
-    it 'validates uniqueness of name scoped to project' do
-      expect(subject).to validate_uniqueness_of(:name)
-        .scoped_to(:project_id)
-    end
-  end
-
   describe 'associations' do
     it 'belongs to the project' do
       expect(container_repository).to belong_to(:project)