gcloud alpha run instances ssh

INFORMATION
gcloud alpha run instances ssh is not available in universe domain universe.
NAME
gcloud alpha run instances ssh - SSH into an instance
SYNOPSIS
gcloud alpha run instances ssh INSTANCE [--container=CONTAINER] [--region=REGION] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(ALPHA) Starts a secure, interactive shell session with a Cloud Run instance.
EXAMPLES
To start an interactive shell session with a Cloud Run instance: 
gcloud alpha run instances ssh my-instance
POSITIONAL ARGUMENTS
INSTANCE
The name of the instance to SSH into.
FLAGS
--container=CONTAINER
Name of a specific container to SSH into.
--region=REGION
Region in which the resource can be found. Alternatively, set the property [run/region].
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 instances ssh