Ansible building docker to build docker containers with ansible?

Why would I want to do this?

We need a standardised environment that has Ansible and Packer installed in order to build Docker & Amazon AMI images.

This environment may as well be a Docker container, which we may as well build using Ansible as it allows us to keep the Dockerfile simple.

Ansible can provide us a base Docker image available in the registry

Useful resources

• Gotchas with Dockerfiles
  

Ansible bootstrapped Dockerfile

The Dockerfile for this is very simple and can be extended to add Packer and other utilities needed to build our images

# Latest version of centos
FROM centos:centos7
MAINTAINER Toshio Kuratomi <tkuratomi@ansible.com>
RUN yum clean all && \
    yum -y install epel-release && \
    yum -y install PyYAML python-jinja2 python-httplib2 python-keyczar python-paramiko python-setuptools git python-pip
RUN mkdir /etc/ansible/
RUN echo '[local]\nlocalhost\n' > /etc/ansible/hosts
RUN pip install ansible

A similar approach is descriped in this post installing-and-building-docker-with-ansible

Calling local Ansible playbook and installing Packer

Github example