Docker-in-Docker with Amazon Linux 2 Container

Dockerfile

FROM amazonlinux:2

RUN yum -y update \
    # systemd is not a hard requirement for Amazon ECS Anywhere, but the installation script currently only supports systemd to run.
    # Amazon ECS Anywhere can be used without systemd, if you set up your nodes and register them into your ECS cluster **without** the installation script.
    && yum -y install systemd \
    && yum clean all

RUN cd /lib/systemd/system/sysinit.target.wants/; \
    for i in *; do [ $i = systemd-tmpfiles-setup.service ] || rm -f $i; done

RUN rm -f /lib/systemd/system/multi-user.target.wants/* \
    /etc/systemd/system/*.wants/* \
    /lib/systemd/system/local-fs.target.wants/* \
    /lib/systemd/system/sockets.target.wants/*udev* \
    /lib/systemd/system/sockets.target.wants/*initctl* \
    /lib/systemd/system/basic.target.wants/* \
    /lib/systemd/system/anaconda.target.wants/*

RUN amazon-linux-extras install epel docker && \
    systemctl enable docker

CMD ["/usr/sbin/init"]

@tjtaill According to the error message you got, it looks you need to run Docker daemon beforehand.