ansible-role-docker_host/templates/daemon.json.j2

{
  "data-root": "{{ docker_host_data_dir }}",
  "default-address-pools": {{ docker_host_address_pools | to_nice_json }},
{% if docker_host_user_namespaces is true %}
  "userns-remap": "default",
{% endif %}
  "log-driver": "local",
  "log-opts": {
    "max-size": "20m",
    "max-file": "10",
    "compress": "true"
  }
}