[CI] Silences gem install output

Author: picandocodigo

.ci/Dockerfile

@@ -12,7 +12,7 @@ COPY . .
 
 RUN apt-get update
 RUN apt-get install zip
-RUN gem update --system
+RUN gem update --system --quiet --silent
 RUN bundle install --quiet
 RUN bundle exec rake bundle:clean
 RUN rake bundle:install

Rakefile

@@ -106,7 +106,7 @@ namespace :bundle do
   task :install do
     SUBPROJECTS.each do |project|
       puts '-' * 80
-      sh "cd #{CURRENT_PATH.join(project)} && unset BUNDLE_GEMFILE && bundle install"
+      sh "cd #{CURRENT_PATH.join(project)} && unset BUNDLE_GEMFILE && bundle install --quiet"
       puts
     end
   end