Dockerfile

FROM ruby:2.7.0-slim

LABEL maintainer="Igor Zubkov <igor.zubkov@gmail.com>"

RUN set -eux; \
    apt-get update -y ; \
    apt-get dist-upgrade -y ; \
    apt-get install git gcc g++ make libpq-dev --no-install-recommends -y ; \
    apt-get autoremove -y ; \
    apt-get clean -y ; \
    rm -rf /var/lib/apt/lists/*

RUN mkdir -p /app

WORKDIR /app

COPY Gemfile Gemfile

COPY Gemfile.lock Gemfile.lock

ENV RAILS_ENV production

ENV RUBYGEMS_VERSION 3.1.2

RUN gem update --system "$RUBYGEMS_VERSION"

ENV BUNDLER_VERSION 2.1.4

RUN gem install bundler --version "$BUNDLER_VERSION" --force

# throw errors if Gemfile has been modified since Gemfile.lock
RUN bundle config set --global frozen 1

# two jobs
RUN bundle config set --global jobs 2

# install only production gems without development and test
RUN bundle config set --global without development test

# retry 5 times before fail
RUN bundle config set --global retry 5

RUN bundle install

#COPY package.json package.json
#
#COPY yarn.lock yarn.lock
#
#RUN yarn install

COPY . .

RUN bundle exec rake SECRET_KEY_BASE=blablabla DB_ADAPTER=nulldb DATABASE_URL="postgres://postgres@postgresql/evemonk_production?pool=1&encoding=unicode" assets:precompile

EXPOSE 3000/tcp

CMD ["rails", "server", "-b", "0.0.0.0"]