Added wwctl image build --syncuser

- #1321

Signed-off-by: Jonathon Anderson <janderson@ciq.com>

internal/app/wwctl/image/build/main.go

@@ -1,16 +1,27 @@
 package build
 
 import (
+	"fmt"
+
 	"github.com/spf13/cobra"
-	"github.com/warewulf/warewulf/internal/pkg/api/image"
+	apiimage "github.com/warewulf/warewulf/internal/pkg/api/image"
 	"github.com/warewulf/warewulf/internal/pkg/api/routes/wwapiv1"
+	"github.com/warewulf/warewulf/internal/pkg/image"
 )
 
 func CobraRunE(cmd *cobra.Command, args []string) error {
+	if SyncUser {
+		for _, name := range args {
+			if err := image.SyncUids(name, true); err != nil {
+				return fmt.Errorf("syncuser error: %w", err)
+			}
+		}
+	}
+
 	cbp := &wwapiv1.ImageBuildParameter{
 		ImageNames: args,
 		Force:      BuildForce,
 		All:        BuildAll,
 	}
-	return image.ImageBuild(cbp)
+	return apiimage.ImageBuild(cbp)
 }

internal/app/wwctl/image/build/root.go

@@ -23,11 +23,13 @@ var (
 	}
 	BuildForce bool
 	BuildAll   bool
+	SyncUser   bool
 )
 
 func init() {
 	baseCmd.PersistentFlags().BoolVarP(&BuildAll, "all", "a", false, "(re)Build all images")
 	baseCmd.PersistentFlags().BoolVarP(&BuildForce, "force", "f", false, "Force rebuild, even if it isn't necessary")
+	baseCmd.PersistentFlags().BoolVar(&SyncUser, "syncuser", false, "Synchronize UIDs/GIDs from host to image")
 }
 
 // GetRootCommand returns the root cobra.Command for the application.