Ansible Playbook to build multiple Docker images without any Dockerfile (requires Ansible v2.0)

docker_image_builder.yaml

---

### Inventory hosts file should contain this:
# test1 docker_source_image=centos:7
# test2 docker_source_image=centos:7
###

### Run the playbook like this:
# ansible-playbook -i hosts --diff ./docker_image_builder.yaml
###


#####
### The following play will apply to all containers
#####

- name: Make sure the Docker container is running
  connection: local
  hosts: all
  tasks:
    - name: Create Docker container
      docker:
        name: "{{ inventory_hostname }}"
        image: "{{ docker_source_image }}"
        command: /bin/sleep 10000
        state: started


#####
### Each of the following plays will apply strictly per container type (the invenotry hostname)
#####

- name: Configure the Docker container test1
  connection: docker
  hosts: test1
  tasks:
    - package:
        name: mc
        state: present

- name: Configure the Docker container test2
  connection: docker
  hosts: test2
  tasks:
    - package:
        name: vim
        state: present


#####
### The following play will apply to all containers
#####

- name: Create new image from the container, destroy the container and push the image into the repo
  connection: local
  hosts: all
  vars:
    # These vars can go into the inventory file OR host_vars OR group_vars OR vars_files
    docker_author: Jiri Tyr
    docker_repo: jtyr
    docker_tag: 1
    docker_commit: true
    docker_stop: true
    docker_push: false
  tasks:
    - name: Make a new image from the Docker container
      shell: docker commit --author "{{ docker_author }}" {{ inventory_hostname }} {{ docker_repo }}/{{ inventory_hostname }}:{{ docker_tag }}
      when: docker_commit

    - name: Stop and remove the Docker container
      docker:
        name: "{{ inventory_hostname }}"
        image: "{{ docker_source_image }}"
        state: absent
      when: docker_stop

    - name: Push the Docker image into the repo
      shell: docker push {{ docker_repo }}/{{ inventory_hostname }}:{{ docker_tag }}
      when: docker_push