docker and tz ansible playbook

ansible.txt

$ sudo mkdir /etc/ansible
$ sudo chown root:adm /etc/ansible
$ sudo chmod 770 /etc/ansible
$ cat > /etc/ansible/hosts <<EOF
all:
  children:
    localCentosVm:
      hosts:
        192.168.56.111:
        192.168.56.112:
    oracleCloud:
      hosts:
        instance-abc.oracle.cloud.domain.com:
        second.oracle.cloud.domain.com:
    ubuntu:
      hosts:
        instance-abc.oracle.cloud.domain.com:
        second.oracle.cloud.domain.com:
      vars:
        ansible_user: ubuntu
        ansible_become: true
        ansible_become_user: root
        ansible_become_method: sudo
    centos:
      hosts:
        192.168.56.111:
        192.168.56.112:
      vars:
        ansible_user: root
        ansible_become: false
EOF
$ ansible-inventory --list
	[...]
$ eval `ssh-agent -s`
$ ssh-agent
		### INPUT KEY PASSPHRASE ###
$ ansible all -m ping
192.168.56.111 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false,
    "ping": "pong"
}
192.168.56.112 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false,
    "ping": "pong"
}
[...]
$ mkdir roles
$ cd roles
$ git clone https://github.com/geerlingguy/ansible-role-docker.git geerlingguy.docker
$ cd ..
$ cat >docker-playbook.yml <<EOF
---
- hosts: all

  pre_tasks:
    - name: Update apt cache.
      apt: update_cache=yes cache_valid_time=600
      when: ansible_os_family == 'Debian'

  roles:
    - role: geerlingguy.docker
EOF
$ ansible-playbook --syntax-check docker-playbook.yml
[...]
$ ansible-playbook -C docker-playbook.yml
[...]
$ ansible-playbook docker-playbook.yml
[...]
$ cat >rome_timezone-playbook.yml <<EOF
---
- name: Set Europe/Rome TimeZone
  hosts: all
  tasks:
    - name: Set timezone to Europe/Rome
      timezone:
        name: Europe/Rome
EOF
$ ansible-playbook rome_timezone-playbook.yml
[...]
$