Dockerfile

FROM ruby:2.7.1

# 一旦、大部分参考に
ENV LANG C.UTF-8
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs

RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
  apt-get install nodejs

RUN apt-get update && apt-get install -y curl apt-transport-https wget && \
  curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
  echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
  apt-get update && apt-get install -y yarn && apt-get install -y vim

ENV APP_PATH /startups

RUN mkdir $APP_PATH
WORKDIR $APP_PATH

# /startups でコマンド叩く
ADD Gemfile $APP_PATH/Gemfile
ADD Gemfile.lock $APP_PATH/Gemfile.lock

# bundle install をする階層上必要（なはず）、無しの時、build時のbundle installが0sで終わっていた
RUN gem install bundler:2.1.4
RUN bundle install

ADD . $APP_PATH

# Nginxと通信を行うための準備
RUN mkdir -p tmp/sockets
RUN mkdir -p tmp/pids

VOLUME $APP_PATH/public
VOLUME $APP_PATH/tmp

RUN yarn install --check-files
RUN SECRET_KEY_BASE=placeholder bundle exec rails assets:precompile