Rename "container" to "image"

- Updated `wwctl upgrade` to handle updates
- Maintained `.Container` and `.ContainerName` in tstruct
- Added `ContainerName()` methods to node and profile objects
- Added `--container`, `-C` aliases to wwctl commands (`<node|profile> <add|set>`)
- Added `wwctl container` alias
- Added support for `container_exit.sh` if `image_exit.sh` is not found

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

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

@@ -0,0 +1,40 @@
+package syncuser
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+	image_build "github.com/warewulf/warewulf/internal/pkg/api/image"
+	"github.com/warewulf/warewulf/internal/pkg/api/routes/wwapiv1"
+	"github.com/warewulf/warewulf/internal/pkg/image"
+	"github.com/warewulf/warewulf/internal/pkg/wwlog"
+)
+
+func CobraRunE(cmd *cobra.Command, args []string) error {
+	imageName := args[0]
+	if !image.ValidName(imageName) {
+		return fmt.Errorf("%s is not a valid image", imageName)
+	}
+	err := image.SyncUids(imageName, write)
+	if err != nil {
+		return fmt.Errorf("error in synchronize: %s", err)
+	}
+
+	if write && !build {
+		// when write = true and build = false, we will print a warnning, this is the default case
+		wwlog.Warn("Syncuser is completed, please remember to rebuild image or add `--build` flag for automatic rebuild after syncuser")
+	} else if write && build {
+		// if write = true and build = true, then it'll trigger the image build after sync
+		cbp := &wwapiv1.ImageBuildParameter{
+			ImageNames: []string{imageName},
+			Force:      true,
+			All:        false,
+		}
+		err := image_build.ImageBuild(cbp)
+		if err != nil {
+			return fmt.Errorf("error during image build: %s", err)
+		}
+	}
+
+	return nil
+}