FROM ruby:2.3 ENV PACKAGES="git-core" \ LC_ALL=en_US.UTF-8 ADD / / RUN /scripts/install-essentials RUN /scripts/install-phantomjs 2.1.1 RUN /scripts/install-git RUN locale-gen en_US.UTF-8 ENV LANG en_US.UTF-8 ENV LANGUAGE en_US:en ENV LC_ALL en_US.UTF-8