FROM ruby:2.7.2 RUN apt-get update && apt-get install -y \ curl \ build-essential \ curl -sL https://deb.nodesource.com/setup_12.x | bash - && \ curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \ echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \ apt-get update && apt-get install -y nodejs yarn sqlite3 cron ENV RACK_ENV production WORKDIR /code COPY . /code RUN bundle install EXPOSE 4567 CMD ["/bin/ls", "-l"]