Dockerfile in article (https://evilmartians.com/chronicles/ruby-on-whales-docker-for-ruby-rails-development) has  but it should be `COPY Aptfile /tmp/Aptfile`. The dockerfile in this repo is correct.
Dockerfile in article (https://evilmartians.com/chronicles/ruby-on-whales-docker-for-ruby-rails-development) has
but it should be
COPY Aptfile /tmp/Aptfile. The dockerfile in this repo is correct.