malovme

module Accessors
  def attr_accessor_with_history(*args)
    args.each do |attribute_name|
      define_method(attribute_name) { instance_variable_get("@#{attribute_name}") }

      define_method("#{attribute_name}=") do |value|
        instance_variable_set("@#{attribute_name}", value)
        history = instance_variable_get("@#{attribute_name}_history") || [nil]
        history << value
        instance_variable_set("@#{attribute_name}_history", history)

malovme

FROM ubuntu:16.04

# Using rvm inside docker is bad practice (docker anti-pattern) https://stackoverflow.com/a/41925488/3292174

RUN apt-get update && apt-get install -y openssl curl

# rvm
RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
RUN \curl -L https://get.rvm.io | bash -s stable