initial commit

.gitignore

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+.ansible/
+.vscode
+
+inventory.yaml

playbook.yaml

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+---
+- name: Install APT APT repository
+
+  hosts: ungrouped
+  remote_user: root
+
+  vars_files: vars.yaml
+
+  pre_tasks:
+    - name: Update APT packages indexes
+      ansible.builtin.apt:
+        update_cache: true
+
+    - name: Remove unofficial APT packages
+      ansible.builtin.apt:
+        state: absent
+        name:
+          - docker.io
+          - docker-compose
+          - docker-doc
+          - podman-docker
+
+    - name: Install APT required packages
+      ansible.builtin.apt:
+        state: present
+        name:
+          - ca-certificates
+          - apt-transport-https
+
+    - name: Update keyrings/ permissions
+      ansible.builtin.file:
+        path: '/etc/apt/keyrings'
+        owner: _apt
+        group: nogroup
+        mode: '0755'
+
+  tasks:
+    - name: Download docker.com public gpg
+      ansible.builtin.get_url:
+        url: "{{ url_docker_gpg_public }}"
+        dest: "{{ path_docker_apt_keyring }}"
+        owner: _apt
+        group: nogroup
+        mode: '0644'
+
+    - name: Add docker.com APT repository
+      ansible.builtin.apt_repository:
+        repo: >-
+          deb [signed-by={{ path_docker_apt_keyring }}]
+          https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release | lower }} stable
+        filename: docker
+...

vars.yaml

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+---
+url_docker_gpg_public: 'https://download.docker.com/linux/debian/gpg'
+path_docker_apt_keyring: '/etc/apt/keyrings/docker.asc'
+...