Usage: docker-credential-gcr <flags> <subcommand> <subcommand args>

Subcommands:
	clear            remove all stored credentials
	commands         list all command names
	help             describe subcommands and their syntax
	version          print the version of the binary to stdout

Subcommands for Config:
	config           configure the credential helper
	configure-docker  configures the Docker client to use /usr/bin/docker-credential-gcr

Subcommands for Docker credential store API:
	erase            (UNIMPLEMENTED) erase any stored credentials for the server specified via stdin
	get              for the server specified via stdin, return the stored credentials via stdout
	list             (UNIMPLEMENTED) list all stored credentials
	store            (UNIMPLEMENTED) for the specified server, store the credentials provided via stdin

Subcommands for GCR authentication:
	gcr-login        log in to GCR
	gcr-logout       log out from GCR