gce_vm_container(file = NULL, cloud_init = NULL, image_family = "gci-stable", ...)file or cloud_init must be suppliedreadChar(file, nchars = 32768)google-containers family.
file expects a filepath to a https://cloudinit.readthedocs.io/en/latest/topics/format.html configuration file.
A configuration file must be less than 32768 characters.
image_project will be ignored if set, overriden to google-containers