changes in travis

.travis.yml

@@ -1,9 +1,17 @@
+sudo: required
+
+services:
+  - docker
+  # https://docs.travis-ci.com/user/docker/
+
 addons:
   code_climate:
     repo_token: 53a2c2608c848714e96f6a1fc0365dcfdfec051f7827d50cea965ea625f49734
+
 before_install:
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
+
 before_script:
   - cp .rspec.travis .rspec
   - cp config/action_mailer.yml.travis config/action_mailer.yml
@@ -12,6 +20,7 @@ before_script:
   - cp config/secrets.yml.travis config/secrets.yml
   - psql --command='CREATE DATABASE travis_ci_test;' --username=postgres
   - bundle exec rake db:schema:load RAILS_ENV=test
+
 cache: bundler
 language: ruby
 rvm:
@@ -24,5 +33,5 @@ rvm:
 #  - 2.1.5
 #  - 2.2.1
   - 2.3.1
-script: bundle exec rspec --color --format documentation --require spec_helper --require rails_helper
+script: bundle exec rspec --color --format documentation --require spec_helper --require rails_helper --tag ~docker
 

lib/docker_client.rb

@@ -334,8 +334,8 @@ class DockerClient
     @execution_environment = options[:execution_environment]
     # todo: eventually re-enable this if it is cached. But in the end, we do not need this.
     # docker daemon got much too much load. all not 100% necessary calls to the daemon were removed.
-    @image = self.class.find_image_by_tag(@execution_environment.docker_image)
+    # @image = self.class.find_image_by_tag(@execution_environment.docker_image)
-    fail(Error, "Cannot find image #{@execution_environment.docker_image}!") unless @image
+    # fail(Error, "Cannot find image #{@execution_environment.docker_image}!") unless @image
   end
 
   def self.initialize_environment

spec/features/editor_spec.rb

@@ -13,6 +13,7 @@ describe 'Editor', js: true do
   end
 
   it 'displays the exercise title' do
+    # pending("no exercise title set")
     expect(page).to have_content(exercise.title)
   end
 
@@ -91,7 +92,7 @@ describe 'Editor', js: true do
     before(:each) { click_link(I18n.t('exercises.implement.progress')) }
 
     it 'does not contains a button for submitting the exercise' do
-      # the button is only displayed when an correct LTI handshake to a running course happened. This is not the case in the test
+      # pending("the button is only displayed when an correct LTI handshake to a running course happened. This is not the case in the test")
       expect(page).not_to have_css('#submit')
     end
   end