Dockerfile basic template for Korean ubuntu user.

Dockerfile

FROM ubuntu:18.04

ENV DEBIAN_FRONTEND=noninteractive

# repository
RUN sed -i 's|archive.ubuntu.com|mirror.kakao.com|g' /etc/apt/sources.list
RUN apt-get update
RUN apt-get upgrade -y

# timezone
RUN apt-get install --no-install-recommends -y tzdata
RUN ln -fs /usr/share/zoneinfo/Asia/Seoul /etc/localtime && dpkg-reconfigure -f noninteractive tzdata

# locales
RUN apt-get install --no-install-recommends -y locales
RUN sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
    locale-gen
ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8