chore: version sub command remove --version and -v flag (#2090)

* test: Add unit test for version cmd

cli/root.go

@@ -53,7 +53,6 @@ func init() {
 func Root() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:           "coder",
-		Version:       buildinfo.Version(),
 		SilenceErrors: true,
 		SilenceUsage:  true,
 		Long: `Coder — A tool for provisioning self-hosted development environments.
@@ -90,10 +89,10 @@ func Root() *cobra.Command {
 		users(),
 		portForward(),
 		workspaceAgent(),
+		versionCmd(),
 	)
 
 	cmd.SetUsageTemplate(usageTemplate())
-	cmd.SetVersionTemplate(versionTemplate())
 
 	cmd.PersistentFlags().String(varURL, "", "Specify the URL to your deployment.")
 	cmd.PersistentFlags().String(varToken, "", "Specify an authentication token.")
@@ -110,6 +109,27 @@ func Root() *cobra.Command {
 	return cmd
 }
 
+// versionCmd prints the coder version
+func versionCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:     "version",
+		Short:   "Show coder version",
+		Example: "coder version",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			var str strings.Builder
+			_, _ = str.WriteString(fmt.Sprintf("Coder %s", buildinfo.Version()))
+			buildTime, valid := buildinfo.Time()
+			if valid {
+				_, _ = str.WriteString(" " + buildTime.Format(time.UnixDate))
+			}
+			_, _ = str.WriteString("\r\n" + buildinfo.ExternalURL() + "\r\n")
+
+			_, _ = fmt.Fprint(cmd.OutOrStdout(), str.String())
+			return nil
+		},
+	}
+}
+
 // createClient returns a new client from the command context.
 // It reads from global configuration files if flags are not set.
 func createClient(cmd *cobra.Command) (*codersdk.Client, error) {
@@ -286,17 +306,6 @@ Use "{{.CommandPath}} [command] --help" for more information about a command.
 {{end}}`
 }
 
-func versionTemplate() string {
-	template := `Coder {{printf "%s" .Version}}`
-	buildTime, valid := buildinfo.Time()
-	if valid {
-		template += " " + buildTime.Format(time.UnixDate)
-	}
-	template += "\r\n" + buildinfo.ExternalURL()
-	template += "\r\n"
-	return template
-}
-
 // FormatCobraError colorizes and adds "--help" docs to cobra commands.
 func FormatCobraError(err error, cmd *cobra.Command) string {
 	helpErrMsg := fmt.Sprintf("Run '%s --help' for usage.", cmd.CommandPath())