https://cloud.google.com/container-builder/

https://cloud.google.com/container-builder/docs/
https://cloud.google.com/container-builder/docs/quickstarts
https://cloud.google.com/container-builder/docs/concepts
https://cloud.google.com/container-builder/docs/api
https://cloud.google.com/container-builder/docs/api/reference/rest/v1/projects.builds#Build.MachineType