参考

继承

FROM ruby:2.2.2

变量

ENV APP_HOME /myapp
RUN mkdir $APP_HOME

初始化

RUN bundle install

WORKDIR /myapp

构建中(Onbuild)

ONBUILD RUN bundle install
# when used with another file

命令

EXPOSE 5900
CMD    ["bundle", "exec", "rails", "server"]

参考