-FROM ruby:2.4
+FROM ruby:2.6
WORKDIR /app
RUN apt-get update \
- && apt-get install -y --no-install-recommends libssl1.0-dev
+ && apt-get install -y --no-install-recommends libssl-dev
ADD Gemfile* /app/
-RUN gem install bundler && bundle config build.nokogiri --use-system-libraries && bundle install --jobs 4 --retry 5
+RUN gem install bundler --no-document \
+ && bundle config build.nokogiri --use-system-libraries \
+ && bundle install --jobs $(nproc) --retry 5
ADD . /app/
-RUN bundle exec rubocop -f fuubar
-RUN bundle exec foodcritic -f any cookbooks
+RUN bundle exec cookstyle -f fuubar