Remove usage of DockerClient

spec/support/docker.rb

@@ -1,27 +0,0 @@
-# frozen_string_literal: true
-
-CONTAINER = Docker::Container.send(:new, Docker::Connection.new('http://example.org', {}), 'id' => SecureRandom.hex)
-IMAGE = Docker::Image.new(Docker::Connection.new('http://example.org', {}), 'id' => SecureRandom.hex, 'RepoTags' => [FactoryBot.attributes_for(:ruby)[:docker_image]])
-
-RSpec.configure do |config|
-  config.before(:each) do |example|
-    unless example.metadata[:docker]
-      allow(DockerClient).to receive(:check_availability!).and_return(true)
-      allow(DockerClient).to receive(:create_container).and_return(CONTAINER)
-      allow(DockerClient).to receive(:find_image_by_tag).and_return(IMAGE)
-      allow(DockerClient).to receive(:image_tags).and_return([IMAGE.info['RepoTags']].flatten)
-      allow(DockerClient).to receive(:local_workspace_path).and_return(Dir.mktmpdir)
-      allow_any_instance_of(DockerClient).to receive(:send_command).and_return({})
-      allow_any_instance_of(ExecutionEnvironment).to receive(:working_docker_image?)
-    end
-  end
-
-  config.after(:suite) do
-    examples = RSpec.world.filtered_examples.values.flatten
-    has_docker_tests = examples.any? {|example| example.metadata[:docker] }
-    next unless has_docker_tests
-
-    FileUtils.rm_rf(Rails.root.join('tmp/files/test'))
-    `which docker && test -n "$(docker ps --all --quiet)" && docker rm --force $(docker ps --all --quiet)`
-  end
-end