enhanced container list

Container list has now options for full, kernel and size listing. Without any
arguments only available containers are listed. Size is no more fine granular
showing also size of the image, chroot and compressed image

Signed-off-by: Christian Goll <cgoll@suse.com>

internal/app/wwctl/container/list/root.go

@@ -1,8 +1,16 @@
 package list
 
-import "github.com/spf13/cobra"
+import (
+	"github.com/spf13/cobra"
+)
 
-type variables struct{}
+type variables struct {
+	full       bool
+	size       bool
+	kernel     bool
+	chroot     bool
+	compressed bool
+}
 
 // GetRootCommand returns the root cobra.Command for the application.
 func GetCommand() *cobra.Command {
@@ -15,5 +23,11 @@ func GetCommand() *cobra.Command {
 		RunE:                  CobraRunE(&vars),
 		Aliases:               []string{"ls"},
 	}
+	baseCmd.PersistentFlags().BoolVarP(&vars.full, "long", "l", false, "show all")
+	baseCmd.PersistentFlags().BoolVarP(&vars.kernel, "kernel", "k", false, "show kernel version")
+	baseCmd.PersistentFlags().BoolVarP(&vars.size, "size", "s", false, "show size information")
+	baseCmd.PersistentFlags().BoolVarP(&vars.chroot, "chroot", "c", false, "show size of chroot")
+	baseCmd.PersistentFlags().BoolVar(&vars.compressed, "compressed", false, "show size of the compressed image")
+
 	return baseCmd
 }