community.docker/tests/integration/targets/setup_docker/tasks/main.yml

---
# Copyright (c) Ansible Project
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later

####################################################################
# WARNING: These are designed specifically for Ansible tests       #
# and should not be used as examples of how to write Ansible roles #
####################################################################

- name: Setup Docker
  when: ansible_facts.distribution ~ ansible_facts.distribution_major_version not in  ['CentOS6', 'RedHat6']
  block:
    - name: Detect whether we are running inside a container
      community.docker.current_container_facts:

    - name: Look for marker whether Docker was already set up
      ansible.builtin.stat:
        path: /root/community.docker-docker-is-set-up
      register: docker_setup_marker

    - when: not docker_setup_marker.stat.exists
      block:
        - name: Determine whether Docker Daemon needs to be installed
          ansible.builtin.set_fact:
            needs_docker_daemon: '{{ not ansible_module_running_in_container }}'

        - name: Print information
          ansible.builtin.debug:
            msg: |-
              OS family: {{ ansible_facts.os_family }}
              Distribution: {{ ansible_facts.distribution }}
              Distribution major version: {{ ansible_facts.distribution_major_version }}
              Distribution full version: {{ ansible_facts.distribution_version }}              

        - name: Include distribution specific variables
          ansible.builtin.include_vars: "{{ lookup('first_found', params) }}"
          vars:
            params:
              files:
                - "{{ ansible_facts.distribution }}-{{ ansible_facts.distribution_major_version }}.yml"
                - "{{ ansible_facts.os_family }}-{{ ansible_facts.distribution_major_version }}.yml"
                - "{{ ansible_facts.distribution }}.yml"
                - "{{ ansible_facts.os_family }}.yml"
                - default.yml
              paths:
                - "{{ role_path }}/vars"

        - name: Include distribution specific tasks
          ansible.builtin.include_tasks: "{{ lookup('first_found', params) }}"
          vars:
            params:
              files:
                - "{{ ansible_facts.distribution }}-{{ ansible_facts.distribution_major_version }}.yml"
                - "{{ ansible_facts.os_family }}-{{ ansible_facts.distribution_major_version }}.yml"
                - "{{ ansible_facts.distribution }}.yml"
                - "{{ ansible_facts.os_family }}.yml"
              paths:
                - "{{ role_path }}/tasks"

        - name: Make sure that docker is running
          ansible.builtin.service:
            name: docker
            state: started
          when: not ansible_module_running_in_container

        - name: Set marker that Docker was already set up
          ansible.builtin.file:
            path: /root/community.docker-docker-is-set-up
            state: touch
          when: docker_skip_cleanup

    # Detect docker API version
    - name: Check Docker API version
      ansible.builtin.command: "docker version -f {% raw %}'{{(index .Server.Components 0).Details.ApiVersion}}'{% endraw %}"
      register: docker_api_version_stdout
      ignore_errors: true

    # Detect docker CLI and docker-py versions
    - name: Check Docker CLI version
      ansible.builtin.command: "docker version -f {% raw %}'{{.Client.Version}}'{% endraw %}"
      register: docker_cli_version_stdout
      ignore_errors: true

    - ansible.builtin.set_fact:
        docker_cli_version: "{{ docker_cli_version_stdout.stdout | default('0.0') }}"
        docker_api_version: "{{ docker_api_version_stdout.stdout | default('0.0') }}"

    - ansible.builtin.debug:
        msg: "Docker CLI version: {{ docker_cli_version }}; Docker API version: {{ docker_api_version }}"

    - block:
        # Cleanup docker daemon
        - name: Show all containers
          ansible.builtin.command: 'docker ps --no-trunc --format {% raw %}"{{.Names}}"{% endraw %}'

        - name: "Remove all ansible-docker-test-* docker containers"
          ansible.builtin.shell: 'docker ps --no-trunc --format {% raw %}"{{.Names}}"{% endraw %} | grep "^ansible-docker-test-" | xargs -r docker rm -f'
          register: docker_containers
          retries: 3
          delay: 3
          until: docker_containers is success
          ignore_errors: true

        - name: "Remove all ansible-docker-test-* docker volumes"
          ansible.builtin.shell: 'docker volume ls --format {% raw %}"{{.Name}}"{% endraw %} | grep "^ansible-docker-test-" | xargs -r docker volume rm -f'
          register: docker_volumes
          ignore_errors: true

        - name: "Remove all ansible-docker-test-* docker networks"
          ansible.builtin.shell: 'docker network ls --no-trunc --format {% raw %}"{{.Name}}"{% endraw %} | grep "^ansible-docker-test-" | xargs -r docker network rm'
          register: docker_networks
          ignore_errors: true

        - name: Cleaned docker resources
          ansible.builtin.debug:
            var: docker_resources
          vars:
            docker_resources:
              containers: "{{ docker_containers.stdout_lines | default([]) }}"
              volumes: "{{ docker_volumes.stdout_lines | default([]) }}"
              networks: "{{ docker_networks.stdout_lines | default([]) }}"

        # List all existing docker resources
        - name: List all docker containers
          ansible.builtin.command: docker ps --no-trunc -a
          register: docker_containers
          ignore_errors: true

        - name: List all docker volumes
          ansible.builtin.command: docker volume ls
          register: docker_volumes
          ignore_errors: true

        - name: List all docker networks
          ansible.builtin.command: docker network ls --no-trunc
          register: docker_networks
          ignore_errors: true

        - name: List all docker images
          ansible.builtin.command: docker images --no-trunc -a
          register: docker_images
          ignore_errors: true

        - name: Still existing docker resources
          ansible.builtin.debug:
            var: docker_resources
          vars:
            docker_resources:
              containers: "{{ docker_containers.stdout_lines | default([]) }}"
              volumes: "{{ docker_volumes.stdout_lines | default([]) }}"
              networks: "{{ docker_networks.stdout_lines | default([]) }}"
              images: "{{ docker_images.stdout_lines | default([]) }}"

      when: docker_cli_version is version('0.0', '>')