Dockerfile-rails

# Base image:
FROM rails

# node.js の環境変数を定義する
# 本番環境では production
ENV NODE_ENV=development

# 必要なライブラリインストール
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev

# yarnパッケージ管理ツールインストール
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

# Node.jsをインストール
RUN curl -sL https://deb.nodesource.com/setup_10.x | bash - && apt-get install -y nodejs


# Set an environment variable where the Rails app is installed to inside of Docker image:
ENV RAILS_ROOT /home
RUN mkdir -p $RAILS_ROOT

# Set working directory, where the commands will be ran:
WORKDIR $RAILS_ROOT

# Gems:
COPY app/Gemfile $RAILS_ROOT
COPY app/Gemfile.lock $RAILS_ROOT
RUN gem install bundler
RUN bundle install

# Copy the main application.
COPY ./ .

EXPOSE 3000