install docker on a largest number of linux distribution (based on https://github.com/marklee77/ansible-role-docker)

roles/docker/vars/debian.yml

@@ -0,0 +1,36 @@
+docker_kernel_min_version: '3.2'
+
+docker_package_info:
+  pkg_mgr: apt
+  args:
+    pkg: "{{ item }}"
+    update_cache: yes
+    cache_valid_time: 600
+    state: latest
+  pre_pkgs: 
+    - apt-transport-https
+    - curl
+    - software-properties-common
+  pkgs:
+    - docker-engine
+
+docker_repo_key_info:
+  pkg_key: apt_key
+  args:
+    id: "{{ item }}"
+    keyserver: hkp://p80.pool.sks-keyservers.net:80
+    state: present
+  repo_keys:
+    - 58118E89F3A912897C070ADBF76221572C52609D 
+
+docker_repo_info:
+  pkg_repo: apt_repository
+  args:
+    repo: "{{ item }}"
+    update_cache: yes
+    state: present
+  repos:
+    - >
+       deb https://apt.dockerproject.org/repo 
+       {{ ansible_distribution|lower }}-{{ ansible_distribution_release|lower }}
+       main