gistfile1.txt

# Ansible playbook to use a transient EC2 image to build the container
- name: Creating a disposable worker
  hosts: localhost
  connection: local
  tasks:
  - name: locating latest docker host AMI
    ec2_ami_find:
      region: eu-central-1
      owner: self
      name: debian-8-docker-*
      sort: name
      sort_end: 1
      no_result_action: fail
    register: ami_find
    
  - name: deploying temporary instance
    ec2:
      region: eu-central-1
      key_name: "root_key"
      image: "{{ ami_find.results[0].ami_id }}"
      instance_type: t2.micro
      instance_tags:
        role: docker-build-instance
      wait: true
      wait_timeout: 600
    register: ec2result
  
  - add_host: name={{ ec2result.instances[0].private_ip }} groups=workers