FROM ruby:3.3-rc RUN apt-get update -q \ && apt-get install --no-install-recommends -q -y \ build-essential \ libpq-dev \ && rm -rf /var/lib/apt/lists/* WORKDIR /rack COPY Gemfile app.rb ./ RUN bundle install --jobs=4 EXPOSE 8080 ENV RUBY_YJIT_ENABLE=1 CMD AGOO_WORKER_COUNT=$(nproc) ruby app.rb