root@aio1-utility-container-9cd95789:~# source openrc
root@aio1-utility-container-9cd95789:~# wget http://cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-amd64-disk1.img
root@aio1-utility-container-9cd95789:~# wget http://cloud-images.ubuntu.com/bionic/current/bionic-server-cloudimg-amd64.img 
root@aio1-utility-container-9cd95789:~# openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file xenial-server-cloudimg-amd64-disk1.img \
    Ubuntu-16.04-x86_64
root@aio1-utility-container-9cd95789:~# openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file bionic-server-cloudimg-amd64.img \
    Ubuntu-18.04-x86_64