anchor.diff:  RUN gem install bundler
   RUN bundle config set path 'vendor/bundle'
   RUN bundle install
  +RUN EDITOR=":" bundle exec rails credentials:edit
  +RUN bundle exec rails db:migrate
  +RUN bundle exec rails db:migrate RAILS_ENV=production
   CMD ["bash"]
  
positive.code: ENV LANG ja_JP.UTF-8
  ENV LANGUAGE ja_JP:ja
  ENV LC_TIME C
  RUN localedef -f UTF-8 -i ja_JP ja_JP.utf8
  
  # Add jay user
  
negative.code: FROM ruby:3.0.0
  
  ENV DEBIAN_FRONTEND noninteractive
  
  # Install required packages
  RUN apt-get update -qq \
  