refactoring and cleanup

molecule/default/playbook.yml

@@ -7,4 +7,5 @@
       - python2-pip
 
   roles:
+    - role: xoxys.python3
     - role: xoxys.docker-engine

tasks/main.yml

@@ -1,2 +1,2 @@
 ---
-- include_tasks: install.yml
+- include_tasks: setup.yml

tasks/setup.yml

@@ -11,13 +11,12 @@
         state: present
       loop: "{{ dockerengine_packages_extra }}"
 
-    - name: Install python dependencies
+    - name: Install python requirements
       pip:
-        name: "{{ item }}"
+        name: "{{ item.name }}"
+        executable: "{{ item.exec | default(omit) }}" 
         state: present
-      loop:
-        - docker
-        - docker-compose~=1.24.0
+      loop: "{{ __docker_python_requirements }}"
 
     - name: Add docker group
       group:

vars/main.yml

@@ -0,0 +1,5 @@
+---
+__docker_python_requirements:
+  - name: docker
+  - name: docker-compose
+    exec: /usr/bin/pip3