I'm looking for a way to use gcloud app deploy... to directly grab a Docker address from Docker Hub and deploy straight to Google App Engine. If there's no way, that's fine but I thought I'd check here.
I looked around and didn't see a way to do this directly. It seems that I have to push the container from Docker Hub to Google Container Registry then from there I can run gcloud app deploy --image-url=[HOSTNAME]/[PROJECT-ID]/[IMAGE] to deploy.
This is according to https://cloud.google.com/container-registry/docs/pushing-and-pulling#pushing_an_image_to_a_registry
It might be a better idea to just use a Compute Engine instance. I can push a container from a public source or public/private from Container Registry.
https://cloud.google.com/compute/docs/containers/deploying-containers#prepare