A "full" ubuntu-server development environment docker image

Dockerfile

FROM ubuntu:latest
LABEL maintainer="SiYu Wu <wu.siyu@hotmail.com>"

ENV DEV_USER=user
ENV UID=1000
ENV GID=1000
ENV DEF_PASSWD=password
ENV TZ=Asia/Shanghai
ENV LANG=en_US.UTF-8

RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone && \
    yes | unminimize && \
    apt install -y systemd sudo openssh-server bash-completion zsh git curl vim && \
    addgroup --gid $GID $DEV_USER && \
    adduser --uid $UID --gid $GID --gecos "" --disabled-password $DEV_USER && \
    usermod -aG sudo $DEV_USER && \
    echo "$DEV_USER:$DEF_PASSWD" | chpasswd && \
    systemctl mask systemd-resolved.service && \
    echo "LANG=$LANG" > /etc/default/locale && \
    cp /usr/share/doc/util-linux/examples/securetty /etc/securetty

CMD ["systemd"]