convert vms to containers where possible

[VincentSaelzler]

no reason to use the cloud-init images if i can specify PW, SSH key, and IP using container creation commands.

WILL need some VMs still for:

• gui
• nested virtualization
• docker for websites if i choose to keep that as the way to generate SSL certs

[VincentSaelzler]

compared with container creation from GUI and also just things i noted

• [x] make unprivileged
• [x] no nesting
• [x] ssh key
• [x] cpu
• [x] memory