FROM debian:sid RUN apt-get update RUN apt-get install --no-install-recommends -y curl fish locales RUN echo 'LANG=en_US.UTF-8' > /etc/locale.conf RUN echo 'en_US.UTF-8 UTF-8' > /etc/locale.gen RUN locale-gen ENV LANG=en_US.UTF-8 # Add a non-root user. RUN useradd -m john USER john WORKDIR /home/john RUN fish -c fish_update_completions CMD fish