Dockerfile

FROM ruby:2.6.3-stretch

RUN apt-get update \
  && apt-get install -y curl apt-transport-https ca-certificates \
  && curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
  && echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list \
  && curl -sL https://deb.nodesource.com/setup_10.x | bash \
  && apt-get install -y nodejs \
  && apt-get install -y yarn \
  && apt-get install -y openssh-client \
  && apt-get install -y --no-install-recommends cron \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/* /usr/src/*

ENV DOCKERIZE_VERSION v0.6.1
RUN curl -L https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
  | tar -C /usr/local/bin -xz

WORKDIR /app

COPY Gemfile Gemfile.lock /app/
RUN gem install bundler
RUN bundle install

COPY . /app

ENV GEM_HOME="/usr/local/bundle"
ENV PATH $GEM_HOME/bin:$GEM_HOME/gems/bin:$PATH

ENTRYPOINT ["/app/docker/entrypoint.sh"]

VOLUME /unicorn
VOLUME /assets
VOLUME /app/config/settings

# Start the main process.
CMD bundle exec unicorn -c ./config/unicorn.rb