Dockerfile

FROM ruby:2.3.1
MAINTAINER Chris Horn <chorn@chorn.com>

ENV DEBIAN_FRONTEND noninteractive
ENV DEBCONF_NONINTERACTIVE_SEEN true

RUN apt-get update -yqq
RUN apt-get upgrade -yqq
RUN apt-get install -yqq sudo less net-tools imagemagick
RUN rm -rf /var/lib/apt/lists/*
RUN gem install bundler --no-ri --no-rdoc

WORKDIR /app
ADD Gemfile /app/Gemfile
ADD Gemfile.lock /app/Gemfile.lock
RUN bundle install
ADD . /app

ENV RAILS_ENV development

CMD ["bundle", "exec", "rackup"]