Pre-installs python2 and Installs Docker

setup-server.yml

---
- hosts: all
  remote_user: root
  gather_facts: no
  pre_tasks:
  - name: 'install python2'
    raw: sudo apt-get -y install python-simplejson

  tasks:
  - name: Install Python
    apt: name=python state=present

  - name: Install Python-pip
    apt: name=python-pip state=present

  - name: Install Docker
    apt: name=docker.io state=present

  - name: Install Docker-compose
    shell: pip install docker-compose
...