Services deployed by Murano require specially prepared images. After images are created they should be registered in Openstack Glance - image operation service.
># glance image-create --disk-format=qcow2 --container-format=bare --is-public=true --file=cloud-linux.img --name=cloud-linux
Note
Image should be marked with an appropriate type. That could be done through the Horizon UI. Navigate to Project -> Environments -> Marked Images -> Mark Image and fill up form:
Image - cloud-linux
Title - My Cloud-ready Linux
Type - Generic Linux
After these steps desired image can be chosen in Murano dashboard and used for services platform.