Add some debugging output

nix/cache/cache.go

@@ -105,8 +105,9 @@ func downloadAndUploadIso(minioClient *minio.Client, iso IsoInfo) error {
 	}
 
 	log.Println("Uploading " + destPath)
+	uploadPath := "cache/" + iso.Distro + "/" + iso.Hash + ".iso"
 	// Upload the file to MinIO
-	_, err = minioClient.PutObject(context.Background(), "isos", "cache/"+iso.Hash+".iso", uploadFile, fileInfo.Size(), minio.PutObjectOptions{
+	_, err = minioClient.PutObject(context.Background(), "isos", uploadPath, uploadFile, fileInfo.Size(), minio.PutObjectOptions{
 		ContentType: "application/x-iso9660-image",
 	})
 	if err != nil {
@@ -118,6 +119,7 @@ func downloadAndUploadIso(minioClient *minio.Client, iso IsoInfo) error {
 
 func main() {
 	endpoint := os.Getenv("STORAGE_URL")
+	log.Println("Using endpoint:", endpoint)
 	accessKeyID := "root"
 	secretAccessKey := os.Getenv("MINIO_SECRET")
 	if secretAccessKey == "" {