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

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

- name: install MariaDB
  docker_container:
    name: central-mariadb
    image: mariadb:latest #could lead to problems with nextcloud
    detach: yes
    env:
      MARIADB_ROOT_PASSWORD:  "{{central_mariadb_root_password}}"
      MARIADB_AUTO_UPGRADE:   "1"
    networks:
      - name: central_mariadb_network
    volumes:
      - database:/var/lib/mysql
    published_ports:
      - "127.0.0.1:3306:3306"
    command: "--transaction-isolation=READ-COMMITTED --binlog-format=ROW" #for nextcloud
  when: run_once_docker_mariadb is not defined

- name: wait for availability of mariadb
  wait_for:
    host: "127.0.0.1"
    port: "3306"
    delay: 0      
    timeout: 120
  when: run_once_docker_mariadb is not defined

- name: create database
  mysql_db:
    name: "{{database_databasename}}"
    state: present
    login_user: root
    login_password: "{{central_mariadb_root_password}}"
    login_host: 127.0.0.1
    login_port: 3306
  listen: create database

- name: create database user
  mysql_user:
    name: "{{database_username}}"
    password: "{{database_password}}"
    priv: '{{database_databasename}}.*:ALL'
    state: present
    login_user: root
    login_password: "{{central_mariadb_root_password}}"
    login_host: 127.0.0.1
    login_port: 3306
  listen: create database

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