Add wwctl container show

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

@@ -0,0 +1,38 @@
+package list
+
+import (
+	"github.com/hpcng/warewulf/internal/pkg/container"
+	"github.com/spf13/cobra"
+)
+
+var (
+	baseCmd = &cobra.Command{
+		DisableFlagsInUseLine: true,
+		Use:                   "show [OPTIONS] CONTAINER",
+		Short:                 "Show root fs dir for container",
+		Long: `Shows the base directory for the chroot of the given container. 
+		More information about the conainer can be hosw with -a option.`,
+		RunE: CobraRunE,
+		ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+			if len(args) != 0 {
+				return nil, cobra.ShellCompDirectiveNoFileComp
+			}
+			list, _ := container.ListSources()
+			return list, cobra.ShellCompDirectiveNoFileComp
+		},
+
+		Aliases: []string{"sh", "chroot"},
+		Args:    cobra.MinimumNArgs(1),
+	}
+	ShowAll bool
+)
+
+func Init() {
+	baseCmd.PersistentFlags().BoolVarP(&ShowAll, "all", "a", false, "Show all information about a container")
+
+}
+
+// GetRootCommand returns the root cobra.Command for the application.
+func GetCommand() *cobra.Command {
+	return baseCmd
+}