computer-playbook/roles/docker-mariadb/tasks/main.yml

- name: Create Docker network for MariaDB
  docker_network:
    name: mariadb_network
    state: present
  when: run_once_docker_mariadb is not defined

- name: install MariaDB
  docker_container:
    name: mariadb
    image: mariadb:latest
    detach: yes
    env:
      MARIADB_ROOT_PASSWORD: "{{central_mariadb_root_password}}"
    networks:
      - name: mariadb_network
    published_ports:
      - "127.0.0.1:3306:3306"
  when: run_once_docker_mariadb is not defined

- name: run the docker_mariadb tasks once
  set_fact:
    run_once_docker_mariadb: true
  when: run_once_docker_mariadb is not defined