ansible-role-server/tasks/docker-Debian.yml

---
# Server/Borgbackup: Install and Setup Borgbackup Backup Crobjob - Default Debian Version
# Variables:
# - dockercompose_use_pip: boolean to use pip instead of manual download (default: false)

# Detect some more host facts
- name: docker - Detect architecture
  ansible.builtin.shell: dpkg --print-architecture
  register: dpkg_arch

# Install docker CE
- name: docker - Install docker CE APT dependencies
  become: yes
  ansible.builtin.apt:
    name: "{{ packages }}"
    state: present
  vars:
    packages:
      - apt-transport-https
      - ca-certificates
      - curl
      - gnupg2
      - software-properties-common
- name: docker - Add docker CE repo key
  become: yes
  ansible.builtin.apt_key:
    url: https://download.docker.com/linux/debian/gpg
    state: present

# IMPORTANT: raspbian needs deb [arch=armhf] https://download.docker.com/linux/raspbian ...
- name: docker - Add docker CE repo (Debian)
  become: yes
  ansible.builtin.apt_repository:
    repo: "deb [arch={{ dpkg_arch.stdout }}] https://download.docker.com/linux/debian {{ ansible_distribution_release }} stable"
    state: present
  when: ansible_facts['lsb']['id'] != "Raspbian"
- name: docker - Add docker CE repo (Raspbian)
  become: yes
  ansible.builtin.apt_repository:
    repo: "deb [arch={{ dpkg_arch.stdout }}] https://download.docker.com/linux/raspbian {{ ansible_distribution_release }} stable"
    state: present
  when: ansible_facts['lsb']['id'] == "Raspbian"

- name: docker - Install docker CE
  become: yes
  ansible.builtin.apt:
    name: docker-ce
    state: latest
    install_recommends: no
    update_cache: yes
    cache_valid_time: "3600"

# Install latest release of docker-compose (using pip3)
# docker only provides pre-compiled binaries for x86_64, but not for armhf/ arm64!
# but ansible needs the python package anyway
- name: docker-compose - Discover if ARM is used
  ansible.builtin.set_fact:
    dockercompose_use_pip: true
  when: ansible_architecture == "aarch64" or ansible_architecture == "armv7l"

- name: docker-compose - Install x86_46 binary
  block:
    - name: docker-compose - Get version number of stable
      ansible.builtin.shell: |
        curl -s https://api.github.com/repos/docker/compose/releases/latest \
        | grep tag_name \
        | cut -d '"' -f 4
      args:
        warn: false
      register: latest_dc_version
    - name: docker-compose - Download and install
      become: yes
      ansible.builtin.get_url:
        url: "https://github.com/docker/compose/releases/download/{{ latest_dc_version.stdout }}/docker-compose-Linux-x86_64"
        dest: /usr/local/bin/docker-compose
        force: yes # otherwise updates will not be downloaded
    - name: docker-compose - Make docker-compose executable
      become: yes
      ansible.builtin.file:
        path: /usr/local/bin/docker-compose
        mode: 0755
  when: dockercompose_use_pip == false and ansible_architecture == "x86_64"
- name: docker-compose - Install python package
  block:
    - name: docker-compose - Install requirements
      become: yes
      ansible.builtin.apt:
        name: "{{ packages }}"
        state: present
      vars:
        packages:
          - python3-pip
          - python3-setuptools
    - name: docker-compose - Install using pip3
      become: yes
      ansible.builtin.pip:
        name: docker-compose
        executable: pip3
  when: dockercompose_use_pip == true