FROM ruby:2.7.0 MAINTAINER Yamada, Yasuhiro RUN apt update && \ apt install -y locales && \ localedef -f UTF-8 -i ja_JP ja_JP.utf8 && \ cd ~ && \ git clone https://github.com/greymd/cureutils.git && \ cd cureutils && \ gem install bundler rake && \ bundle install && \ rake build && \ find ./pkg/ -type f | head -n 1 | xargs gem install && \ cd .. && \ rm -rf cureutils ENV LANG ja_JP.UTF-8 ENV LANGUAGE ja_JP.UTF-8 ENV LC_ALL ja_JP.UTF-8