test ansible on local docker - unreachable

I am new with Ansible.

Here is the set I am trying to test

• ansible targets - 2 local docker containers(host port : 9800, 9801)
• ansible is installed in local docker based on centos:latest image

I guess accessing to those 2 containers is working fine, since I am running tomcat instance inside of them. I can access with brower without any extra settings.

This is my /etc/ansible/hosts

# I also tried with 127.0.0.1, but same
[docker-hosts]
0.0.0.0:9800
0.0.0.0:9801

And here is my playbook.yml

---
# This playbook deploys a docker image centos:latest

- hosts: docker-hosts
  remote_user: root
  become: yes
  become_method: sudo

  tasks:
    - name: pulling docker image
      docker_image:
        name: centos

When I command ansible-playbook playbook.yml -f 10, the console shows below error logs.

PLAY [docker-hosts] ************************************************************

TASK [Gathering Facts] *********************************************************
fatal: [127.0.0.1]: UNREACHABLE! => {"changed": false, "msg": "[Errno None] Unable to connect to port 9800 on 127.0.0.1", "unreachable": true}
    to retry, use: --limit @/home/ansible/playbook/playbook.retry

PLAY RECAP *********************************************************************
127.0.0.1                  : ok=0    changed=0    unreachable=1    failed=0   

I think it is just network setting problem, but do not know how to figure it out.

How can I fix this access error?

Thanks!