fix #2 - consistent mention of the [:TAG] arg in usage/help

Author: christian-korneck

cmd/docker-cli-plugin-metadata.go

@@ -40,7 +40,7 @@ var dockerCliPluginMetadataCmd = &cobra.Command{
 		enc := json.NewEncoder(os.Stdout)
 		enc.SetIndent("", "    ")
 		// specs: https://docs.docker.com/engine/extend/cli_plugins/#the-docker-cli-plugin-metadata-subcommand
-		d := map[string]string{"SchemaVersion": "0.1.0", "Vendor": "Christian Korneck", "Version": "1.0.1", "ShortDescription": "Push Readme to container registry"}
+		d := map[string]string{"SchemaVersion": "0.1.0", "Vendor": "Christian Korneck", "Version": "1.0.2", "ShortDescription": "Push Readme to container registry"}
 		enc.Encode(d)
 	},
 }

cmd/pushrm.go

@@ -47,7 +47,7 @@ var pushrmCmd = &cobra.Command{
 	Short:   "push README file from current working directory to container registry (Dockerhub, quay, harbor2)",
 	Long: `help for docker pushrm
 	
-	docker pushrm [IMAGE] [flags]
+	docker pushrm NAME[:TAG] [flags]
 	
 	pushes the README.md file from the current working
 	directory to the container registry (Dockerhub, quay, harbor2)
@@ -125,6 +125,14 @@ var pushrmCmd = &cobra.Command{
 	docker pushrm is being called.
 
 
+	Optional [:TAG] argument
+	========================
+
+	The [:TAG] argument is optional and has no effect for the currently
+	supported providers (which only support a README per repo, not per
+	tag). It is in place in case that additional providers get added in
+	the future that support READMEs on the tag level.
+
 
 `,
 	Run: func(cmd *cobra.Command, args []string) {