Add support for archlinux

Signed-off-by: Knut Ahlers <knut@ahlers.me>

README.md

@@ -4,6 +4,7 @@ This role installs latest docker-ce on a host, configures its startup parameters
 
 ## Requirements
 
+- Archlinux
 - Debian >= 8 (jessie)
 - Ubuntu >= 16.04 (xenial)
 

meta/main.yml

@@ -15,6 +15,8 @@ galaxy_info:
     versions:
       - jessie
       - stretch
+  - name: Archlinux
+    versions: [all]
 
   categories:
     #- cloud

tasks/Archlinux.yml

@@ -0,0 +1,14 @@
+---
+
+- name: Install docker
+  pacman:
+    name: docker
+    update_cache: true
+
+- name: Enable and start docker
+  systemd:
+    name: docker
+    enabled: true
+    state: started
+
+...

tasks/Debian.yml

@@ -0,0 +1,5 @@
+---
+
+- include: Ubuntu.yml
+
+...

tasks/Ubuntu.yml

@@ -0,0 +1,24 @@
+---
+
+- name: Install apt-key
+  apt_key:
+    id: 0EBFCD88
+    url: 'https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg'
+    keyring: /etc/apt/trusted.gpg.d/docker.gpg
+
+- name: Ensure https transport to be available
+  apt:
+    name: apt-transport-https
+    cache_valid_time: 86400
+
+- name: Activate apt-repo
+  apt_repository:
+    repo: 'deb https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} {{ docker_channel }}'
+    state: present
+
+- name: Install docker
+  apt:
+    name: docker-ce
+    cache_valid_time: 86400
+
+...

tasks/main.yml

@@ -1,25 +1,7 @@
 ---
 
-- name: Install apt-key
-  apt_key:
-    id: 0EBFCD88
-    url: 'https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg'
-    keyring: /etc/apt/trusted.gpg.d/docker.gpg
-
-- name: Ensure https transport to be available
-  apt:
-    name: apt-transport-https
-    cache_valid_time: 86400
-
-- name: Activate apt-repo
-  apt_repository:
-    repo: 'deb https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} {{ docker_channel }}'
-    state: present
-
-- name: Install docker
-  apt:
-    name: docker-ce
-    cache_valid_time: 86400
+- name: "Loading distribution specific instructions for {{ ansible_distribution }}"
+  include: "{{ ansible_distribution }}.yml"
 
 - set_fact:
     docker_global_ipv6: "{{ ansible_eth0.ipv6 | selectattr('scope', 'equalto', 'global') | first }}"