Dockerfile

FROM ruby:2.6.4-alpine
RUN apk add --no-cache --update build-base \
  linux-headers \
  libxml2-dev \
  libxslt-dev \
  postgresql-dev \
  tzdata \
  nodejs \
  yarn \
  ghostscript \
  py-simplejson \
  git \
  icu \
  icu-dev \
  && rm -rf /var/cache/apk/*

RUN mkdir -p /app
WORKDIR /app

COPY Gemfile Gemfile.lock ./
COPY vendor ./vendor

RUN gem install bundler
RUN bundle config build.nokogiri --use-system-libraries
RUN bundle config build.charlock_holmes --use-system-libraries
RUN bundle install --jobs `expr $(cat /proc/cpuinfo | grep -c "cpu cores") - 1` --retry 5

COPY . ./

ENV PORT 3000

EXPOSE 3000

ENTRYPOINT ["bundle", "exec"]

CMD ["foreman", "start"]

ARG GIT_USER_EMAIL
ARG GIT_USER_NAME

RUN git config --global user.email "${GIT_USER_EMAIL}"
RUN git config --global user.name "${GIT_USER_NAME}"
RUN git config --global push.default matching