---
# This has only been tests on Amazon Linux 2, CentOS 7-8, Ubuntu 20.04, and
# ArchLinux.

################################################################################
# Prequisites
# This step will:
# 1. Remove any unwanted docker packages, (we want newest package from official
#    docker repos.
# 2. Install dependencies.
# 3. Add official docker repo.
################################################################################

# Archlinux and Amazon Linux don't have any prequisite steps, they're
# repositories have up to date docker packages so we don't need to add a 3rd
# party repo or uninstall unwanted packages.

- include_tasks: prereq_redhat_family.yml
  # We need to exclude Amazon because it's technically in the "RedHat" family
  # but it does not require these prereq steps.
  when: ansible_os_family == "RedHat" and ansible_distribution != "Amazon"

- include_tasks: prereq_ubuntu.yml
  when: ansible_distribution == "Ubuntu"

################################################################################
# End prerequisite steps
################################################################################

# The arch cloud image does not have a package cache, this file will update the
# cache only if we need to install the docker package (not already installed).
- include_tasks: update_arch.yml
  when: ansible_distribution == "Archlinux"

# Install the docker packages. The packages and their names depends on the
# distro,
- name: Install docker packages after adding 3rd party repo.
  package:
    name:
      - docker-ce
      - docker-ce-cli
      - containerd.io
    state: present
  become: true
  when: ansible_distribution != "Amazon" and ansible_distribution != "Archlinux"
- name: Install docker packages for distros that don't use a 3rd party repo.
  package:
    name:
      - docker
    state: present
  become: true
  when: ansible_distribution == "Amazon" or ansible_distribution == "Archlinux"

- name: Add users to the docker group.
  user:
    name: "{{ item }}"
    groups:
      - docker
    append: true
  with_items: "{{ docker_users }}"
  become: true

- name: Enable and start docker service.
  service:
    name: docker
    state: started
    enabled: true
  become: true