FROM ruby:2.3.3 # RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs RUN apt-get update -qq RUN apt-get install -y build-essential RUN apt-get install -y libpq-dev RUN apt-get install -y nodejs # ワーキングディレクトリの設定 RUN mkdir /myapp WORKDIR /myapp # gemfileを追加する ADD Gemfile /myapp/Gemfile ADD Gemfile.lock /myapp/Gemfile.lock # gemfileのinstall RUN bundle install ADD . /myapp R