Dockerfile

FROM centos:7
MAINTAINER "SKYDEVOPS" <syebbare@skydevops.in>
ENV container=docker

# Install systemd -- See https://hub.docker.com/_/centos/
RUN yum -y update; yum clean all; \
(cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \
rm -f /lib/systemd/system/multi-user.target.wants/*;\
rm -f /etc/systemd/system/*.wants/*;\
rm -f /lib/systemd/system/local-fs.target.wants/*; \
rm -f /lib/systemd/system/sockets.target.wants/*udev*; \
rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
rm -f /lib/systemd/system/basic.target.wants/*;\
rm -f /lib/systemd/system/anaconda.target.wants/*;

# Install Ansible and other requirements.
RUN yum makecache fast \
&& yum -y install deltarpm epel-release initscripts docker-selinux container-selinux\
&& yum -y update \
&& yum -y install \
ansible \
sudo \
which \
&& yum clean all

# Disable requiretty.
RUN sed -i -e 's/^\(Defaults\s*requiretty\)/#--- \1/' /etc/sudoers

# Install Ansible inventory file.
RUN echo -e '[local]\nlocalhost ansible_connection=local' > /etc/ansible/hosts

VOLUME ["/sys/fs/cgroup"]
CMD ["/usr/sbin/init"]