install compose to a virtualenv to prevent os dependency mess up

tasks/install.yml

@@ -9,8 +9,17 @@
     - name: Install python dependencies
       pip:
         name: "{{ item }}"
+        virtualenv: /opt/python2/ansible-deps
       loop: "{{ __docker_ansible_deps }}"
 
+    - name: Add docker-compose wrapper
+      template:
+        src: bin/docker-compose.j2
+        dest: /bin/docker-compose
+        owner: root
+        group: root
+        mode: 0755
+
     - name: Install packages
       package:
         name: "{{ item }}"

templates/bin/docker-compose.j2

@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+set -eo pipefail
+
+exec /opt/python2/ansible-deps/bin/docker-compose "$@"