FROM vulhub/rails:5.2.2 LABEL maintainer="phithon " RUN set -ex \ && rails generate controller vulhub \ && { \ echo 'class VulhubController < ApplicationController'; \ echo ' def index'; \ echo ' render file: "#{Rails.root}/public/robots.txt"'; \ echo ' end'; \ echo 'end'; \ } > app/controllers/vulhub_controller.rb \ && { \ echo 'Rails.application.routes.draw do'; \ echo " get 'robots', to: 'vulhub#index'"; \ echo 'end'; \ } > config/routes.rb