FROM ruby:2.7.5-slim-bullseye RUN apt-get update \ && DEBIAN_FRONTEND=noninteractive apt-get \ -o Dpkg::Options::="--force-confnew" --allow-remove-essential --allow-change-held-packages -fuy \ upgrade \ && apt-get install -y --no-install-recommends \ cmake \ pkg-config \ default-libmysqlclient-dev \ nodejs \ curl \ git \ ruby-dev \ telnet \ nano \ build-essential \ libpq-dev \ shared-mime-info \ && apt-get autoremove \ && apt-get autoclean \ && apt-get clean \ && rm -rf /var/lib/apt/lists/* \ && adduser nexus --system --group -u 1000 && mkdir -p /app && chown -R nexus:nexus /app USER nexus WORKDIR /app COPY --chown=nexus:nexus Gemfile Gemfile.lock ./ RUN bundle config --local build.sassc --disable-march-tune-native && gem install bundler -v 2.1 && bundle install --jobs 20 --retry 5