Docker based ansible playbook to deploy Redis

docker_redismod.yml

---
- hosts: all
  become: true
  vars:
    create_containers: 1
    default_container_name: redis
    default_container_image: redislabs/redismod
    default_container_command: /usr/etc/redis/redis.conf

  tasks:
    - name: Install aptitude using apt
      apt: name=aptitude state=latest update_cache=yes force_apt_get=yes

    - name: Install required system packages
      apt: name={{ item }} state=latest update_cache=yes
      loop: [ 'apt-transport-https', 'ca-certificates', 'curl', 'software-properties-common', 'python3-pip', 'virtualenv', 'python3-setuptools']

    - name: Add Docker GPG apt Key
      apt_key:
        url: https://download.docker.com/linux/ubuntu/gpg
        state: present

    - name: Add Docker Repository
      apt_repository:
        repo: deb https://download.docker.com/linux/ubuntu bionic stable
        state: present

    - name: Update apt and install docker-ce
      apt: update_cache=yes name=docker-ce state=latest

    - name: Install pip
      apt: name=python-pip state=present

    - name: Install Docker Module for Python
      pip:
        name: docker

    - name: create directory if they don't exist
      file:
        path: "{{ item }}"
        state: directory
        owner: root
        group: root
        mode: 0775
      with_items:
      - /usr/etc
      - /usr/etc/redis
      - /mnt/data
            
    - name: Copy Redis Config
      template:
        src: redis.conf.j2
        dest: /usr/etc/redis/redis.conf
        owner: root
        group: root
        mode: 0644
      become: true
    
    - name: select zerotier interface
      debug: 
        msg: "{{ ansible_zthnhhgvoc.ipv4.address }}"

    - name: Pull default Docker image
      docker_image:
        name: "{{ default_container_image }}"
        source: pull
    

    - name: Deploy Redis Server
      docker_container:
        name: "{{ default_container_name }}"
        image: "{{ default_container_image }}"
        command: "{{ default_container_command }}"
        network_mode: host
        exposed_ports:
          - 6379
        ports:
          - 6379:6379
        volumes:
          - /mnt/data:/data
          - /usr/etc/:/usr/etc
        state: started