Add ability to run on Fedora

README.md

@@ -297,7 +297,7 @@ have to edit any of these variables.
 
 ```yml
 # List of packages to be installed.
-docker__package_dependencies:
+docker__apt_package_dependencies:
   - "apt-transport-https"
   - "ca-certificates"
   - "cron"
@@ -317,6 +317,19 @@ docker__apt_repository: >
   {{ ansible_distribution_release }} {{ docker__channel | join (' ') }}
 ```
 
+### Configuring the DNF package manager
+
+Docker requires a few dependencies to be installed for it to work. You shouldn't
+have to edit this variable.
+
+```yml
+# List of packages to be installed.
+docker__dnf_package_dependencies:
+  - "ca-certificates"
+  - "cronie"
+  - "gnupg2"
+  - "libselinux-python"
+
 ### Installing Python packages with Virtualenv and PIP
 
 #### Configuring Virtualenv
@@ -337,9 +350,15 @@ PIP package.
 ```yml
 # This will attempt to install the correct version of PIP based on what your
 # configured Ansible Python interpreter is set to (ie. Python 2 or 3).
-docker__pip_dependencies:
+docker__apt_pip_dependencies:
   - "python-setuptools"
   - "python{{ '3' if ansible_python.version.major == 3 else '' }}-pip"
+
+docker__dnf_pip_dependencies:
+  - "python{{ ansible_python.version.major }}"
+  - "python{{ ansible_python.version.major }}-pip"
+  - "python{{ ansible_python.version.major }}-libs"
+  - "python{{ ansible_python.version.major }}-setuptools"
 ```
 
 #### Installing PIP packages

defaults/main.yml

@@ -31,24 +31,36 @@ docker__cron_jobs:
     cron_file: "docker-disk-clean-up"
     user: "{{ (docker__users | first) | d('root') }}"
 
-docker__package_dependencies:
+docker__apt_package_dependencies:
   - "apt-transport-https"
   - "ca-certificates"
   - "cron"
   - "gnupg2"
   - "software-properties-common"
 
+docker__dnf_package_dependencies:
+  - "ca-certificates"
+  - "cronie"
+  - "gnupg2"
+  - "libselinux-python"
+
 docker__apt_key_id: "9DC858229FC7DD38854AE2D88D81803C0EBFCD88"
 docker__apt_key_url: "https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg"
 docker__apt_repository: >
   deb [arch=amd64]
   https://download.docker.com/linux/{{ ansible_distribution | lower }}
   {{ ansible_distribution_release }} {{ docker__channel | join (' ') }}
 
-docker__pip_dependencies:
+docker__apt_pip_dependencies:
   - "python-setuptools"
   - "python{{ '3' if ansible_python.version.major == 3 else '' }}-pip"
 
+docker__dnf_pip_dependencies:
+  - "python{{ ansible_python.version.major }}"
+  - "python{{ ansible_python.version.major }}-pip"
+  - "python{{ ansible_python.version.major }}-libs"
+  - "python{{ ansible_python.version.major }}-setuptools"
+
 docker__pip_virtualenv: "/usr/local/lib/docker/virtualenv"
 
 docker__default_pip_packages:

tasks/apt.yml

@@ -0,0 +1,35 @@
+---
+
+- name: Disable pinned Docker version
+  file:
+    dest: "/etc/apt/preferences.d/docker-ce.pref"
+    state: "absent"
+  when: not docker__version | d()
+
+- name: Enable pinned Docker version
+  template:
+    src: "etc/apt/preferences.d/docker-ce.pref.j2"
+    dest: "/etc/apt/preferences.d/docker-ce.pref"
+    owner: "root"
+    group: "root"
+    mode: "0644"
+  when: docker__version | d()
+
+- name: Install Docker's dependencies
+  apt:
+    name: "{{ docker__apt_package_dependencies + docker__apt_pip_dependencies }}"
+
+- name: Add Docker's public PGP key to the APT keyring
+  apt_key:
+    id: "{{ docker__apt_key_id }}"
+    url: "{{ docker__apt_key_url }}"
+
+- name: Configure Docker's upstream APT repository
+  apt_repository:
+    repo: "{{ docker__apt_repository }}"
+    update_cache: true
+
+- name: Install Docker
+  apt:
+    name: "docker-{{ docker__edition }}"
+    state: "{{ docker__state }}"

tasks/dnf.yml

@@ -0,0 +1,32 @@
+---
+# Installing docker via https://docs.docker.com/install/linux/docker-ce/fedora/
+
+- name: Old Docker versions are absent
+  dnf:
+    name: "{{ item }}"
+    state: absent
+  loop:
+    - 'docker'
+    - 'docker-client'
+    - 'docker-client-latest'
+    - 'docker-common'
+    - 'docker-latest'
+    - 'docker-latest-logrotate'
+    - 'docker-logrotate'
+    - 'docker-selinux'
+    - 'docker-engine-selinux'
+    - 'docker-engine'
+
+- name: Docker's Repository is added
+  get_url:
+    url: https://download.docker.com/linux/fedora/docker-ce.repo
+    dest: /etc/yum.repos.d/docker-ce.repo
+
+- name: Install Docker's dependencies
+  dnf:
+    name: "{{ docker__dnf_package_dependencies + docker__dnf_pip_dependencies }}"
+
+- name: Install Docker
+  dnf:
+    name: "docker-{{ docker__edition }}"
+    state: "{{ docker__state }}"

tasks/main.yml

@@ -1,38 +1,7 @@
 ---
 
-- name: Disable pinned Docker version
-  file:
-    dest: "/etc/apt/preferences.d/docker-ce.pref"
-    state: "absent"
-  when: not docker__version | d()
-
-- name: Enable pinned Docker version
-  template:
-    src: "etc/apt/preferences.d/docker-ce.pref.j2"
-    dest: "/etc/apt/preferences.d/docker-ce.pref"
-    owner: "root"
-    group: "root"
-    mode: "0644"
-  when: docker__version | d()
-
-- name: Install Docker's dependencies
-  apt:
-    name: "{{ docker__package_dependencies + docker__pip_dependencies }}"
-
-- name: Add Docker's public PGP key to the APT keyring
-  apt_key:
-    id: "{{ docker__apt_key_id }}"
-    url: "{{ docker__apt_key_url }}"
-
-- name: Configure Docker's upstream APT repository
-  apt_repository:
-    repo: "{{ docker__apt_repository }}"
-    update_cache: true
-
-- name: Install Docker
-  apt:
-    name: "docker-{{ docker__edition }}"
-    state: "{{ docker__state }}"
+- name: Include Appropriate Package Management
+  include_tasks: "{{ ansible_pkg_mgr }}.yml"
 
 - name: Check for existing Docker Compose file
   stat: