Beginning to break out wwbuild into wwctl with proper Go structure and Cobra

cmd/wwctl/main.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"github.com/hpcng/warewulf/internal/app/wwctl"
+)
+
+
+func main() {
+
+	root := wwctl.GetRootCommand()
+
+	root.Execute()
+}