fix: use the default config dirs provider

kernel/kernel.go

@@ -12,7 +12,7 @@ import (
 	"os"
 	"os/exec"
 	"os/signal"
-	"os/user"
+	"path/filepath"
 	"regexp"
 	"runtime"
 	"strings"
@@ -326,16 +326,10 @@ func findInitrdFile(files []os.FileInfo, kname string) (name string, err error)
 }
 
 func GenRootfsImage(d container.Image, download bool) (rootfs string, err error) {
-	usr, err := user.Current()
-	if err != nil {
-		return
-	}
+	imagesPath := config.Dir("images")
 	imageFile := d.Name + ".img"
 
-	imagesPath := usr.HomeDir + "/.out-of-tree/images/"
-	os.MkdirAll(imagesPath, os.ModePerm)
-
-	rootfs = imagesPath + imageFile
+	rootfs = filepath.Join(imagesPath, imageFile)
 	if !fs.PathExists(rootfs) {
 		if download {
 			log.Info().Msgf("%v not available, start download", imageFile)
@@ -395,13 +389,7 @@ func UpdateKernelsCfg(host, download bool) (err error) {
 
 	buf = append([]byte("# Autogenerated\n# DO NOT EDIT\n\n"), buf...)
 
-	usr, err := user.Current()
-	if err != nil {
-		return
-	}
-
-	// TODO move all cfg path values to one provider
-	kernelsCfgPath := usr.HomeDir + "/.out-of-tree/kernels.toml"
+	kernelsCfgPath := config.File("kernels.toml")
 	err = ioutil.WriteFile(kernelsCfgPath, buf, 0644)
 	if err != nil {
 		return