added required packages installation as without those was not able to create container using docker_container module

tasks/setup-Debian.yml

@@ -38,3 +38,16 @@
     repo: "{{ docker_apt_repository }}"
     state: present
     update_cache: yes
+
+- name: Install packages required for docker_container see https://docs.ansible.com/ansible/docker_container_module.html#requirements-on-host-that-executes-module
+  apt: name={{item}} state=installed
+  become: yes
+  with_items:
+       - python-dev
+       - python-pip
+
+
+- name: pip install docker-py via pip module
+  pip: 
+    name: docker-py
+    version: 1.10.6