Update Docker example README.
Update Docker example README.

geerlingguy/ansible-for-devops,vichusharma/ansible_I_am_learning,vichusharma/ansible_I_am_learning,geerlingguy/ansible-for-devops,geerlingguy/ansible-for-devops,vichusharma/ansible_I_am_learning,vichusharma/ansible_I_am_learning,geerlingguy/ansible-for-devops,geerlingguy/ansible-for-devops