gcloud alpha run services ssh

INFORMATION
gcloud alpha run services ssh is not available in universe domain universe.
NAME
gcloud alpha run services ssh - SSH into a service instance
SYNOPSIS
gcloud alpha run services ssh SERVICE [--container=CONTAINER] [--instance=INSTANCE] [--region=REGION] [--revision=REVISION] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(ALPHA) Starts a secure, interactive shell session with an instance of a Cloud Run service.
EXAMPLES
To start an interactive shell session with a Cloud Run service: 
gcloud alpha run services ssh my-service --instance=my-instance-id
POSITIONAL ARGUMENTS
SERVICE
The name of the service to SSH into.
FLAGS
--container=CONTAINER
Name of a specific container to SSH into.
--instance=INSTANCE
ID of a specific instance to SSH into.
--region=REGION
Region in which the resource can be found. Alternatively, set the property [run/region].
--revision=REVISION
Name of a specific revision to SSH into.
GCLOUD WIDE FLAGS
These flags are available to all commands: --access-token-file, --account, --billing-project, --configuration, --flags-file, --flatten, --format, --help, --impersonate-service-account, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity.

Run $ gcloud help for details.

NOTES
This command is currently in alpha and might change without notice. If this command fails with API permission errors despite specifying the correct project, you might be trying to access an API with an invitation-only early access allowlist. This variant is also available: 
gcloud beta run services ssh