Dockerfile

FROM ruby:3.0.4-slim

RUN apt-get update -qq && apt-get install -yq --no-install-recommends \
    build-essential \
    gnupg2 \
    libpq-dev \
    postgresql-client \
    nodejs \
    nano \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

ENV LANG=C.UTF-8 \
    BUNDLE_JOBS=4 \
    BUNDLE_RETRY=3 \
    RAILS_ENV=production

RUN gem update --system && gem install bundler

WORKDIR /usr/src/app

COPY Gemfile* ./

# RUN bundle config frozen true \
#     && bundle config jobs 4 \
#     && bundle config deployment true \
#     && bundle config without 'development test' \
#     && bundle install

RUN bundle install

COPY . .


VOLUME ["$RAILS_ROOT/public"]
# Precompile assets
# SECRET_KEY_BASE or RAILS_MASTER_KEY is required in production, but we don't
# want real secrets in the image or image history. The real secret is passed in
# at run time
ARG SECRET_KEY_BASE=fakekeyforassets
RUN bin/rails assets:clobber && bundle exec rails assets:precompile

EXPOSE 3000

CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]