Ability to "publish cloudrun" with no user input

[simonw]

If you attempt to deploy a new version of a cloudrun deployment, the script currently pauses and asks for user input for the service name like this:

Service name: (sf-trees):  USER INPUT REQUIRED HERE
Deploying container to Cloud Run service [sf-trees] in project [datasette-222320] region [us-central1]
✓ Deploying... Done.                                                                                                                                                     
  ✓ Creating Revision...                                                                                                                                                 
  ✓ Routing traffic...                                                                                                                                                   
  ✓ Setting IAM Policy...                                                                                                                                                

This is incompatible with running under CI.

[simonw]

From https://cloud.google.com/sdk/gcloud/reference/beta/run/deploy it looks like the service can be provided as an optional positional argument. How about datasette publish cloudrun ... --service=sf-trees

[simonw]

Updated docs now live at https://datasette.readthedocs.io/en/latest/publish.html#publishing-to-google-cloud-run