Current situation
This page details the requirements for official GCE images: https://cloud.google.com/marketplace/docs/partners/vm/build-vm-image#test_the_vm_image

From the checks listed there we are missing:

• Having python installed
• Having a working gcloud / gsutil (a docker error is printed when calling these commands)
• Having dhcp in the process list. I'm not sure why they want that, though. We use systemd-networkd, maybe that was not considered when creating the list.

Impact
We can't provide official images until we pass this validation

Ideal future situation
GCE images include python and gsutil/gcloud work out of the box.

/cc @blixtra