Dockerfile

FROM registry.opensource.zalan.do/library/ubuntu-18.04
MAINTAINER Alexander Kukushkin <alexander.kukushkin@zalando.de>

ENV USER etcd
ENV HOME /home/${USER}

# Create home directory for etcd
RUN useradd -d ${HOME} -k /etc/skel -s /bin/bash -m ${USER} && chmod 777 ${HOME}

RUN export DEBIAN_FRONTEND=noninteractive \
    && apt-get update \
    && echo 'APT::Install-Recommends "0";' > /etc/apt/apt.conf.d/01norecommend \
    && echo 'APT::Install-Suggests "0";' >> /etc/apt/apt.conf.d/01norecommend \

    && apt-get upgrade -y \
    && apt-get install -y curl ca-certificates python3-boto3 \

    # Clean up
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

## Install etcd

ARG ETCDVERSION_PREV=3.3.25
RUN curl -L https://github.com/etcd-io/etcd/releases/download/v${ETCDVERSION_PREV}/etcd-v${ETCDVERSION_PREV}-linux-amd64.tar.gz \
        | tar xz -C /bin --xform='s/$/.old/x' --strip=1 --wildcards --no-anchored etcd \
    && chown root:root /bin/etcd.old \
    && chmod +x /bin/etcd.old

ARG ETCDVERSION=3.4.14
ENV ETCDVERSION=$ETCDVERSION
RUN curl -L https://github.com/etcd-io/etcd/releases/download/v${ETCDVERSION}/etcd-v${ETCDVERSION}-linux-amd64.tar.gz \
        | tar xz -C /bin --strip=1 --wildcards --no-anchored etcd etcdctl \
    && chown root:root /bin/etcd /bin/etcdctl \
    && chmod +x /bin/etcd /bin/etcdctl

COPY etcd.py /bin/etcd.py

WORKDIR $HOME
USER ${USER}
EXPOSE 2379 2380 2381
CMD ["/usr/bin/python3", "/bin/etcd.py"]