fix: Don't throw detection errors on the floor

Debugging without these is an absolute PITA.

Signed-off-by: Justin Chadwell <justin@unikraft.com>

Author: jedevc

initrd/detect.go

@@ -7,21 +7,41 @@ package initrd
 import (
 	"context"
 	"fmt"
+
+	"kraftkit.sh/log"
 )
 
 // New attempts to return the builder for a supplied path which
 // will allow the provided ...
 func New(ctx context.Context, path string, opts ...InitrdOption) (Initrd, error) {
 	if builder, err := NewFromDockerfile(ctx, path, opts...); err == nil {
 		return builder, nil
-	} else if builder, err := NewFromTarball(ctx, path, opts...); err == nil {
+	} else {
+		log.G(ctx).Tracef("could not build initrd from Dockerfile: %s", err)
+	}
+
+	if builder, err := NewFromTarball(ctx, path, opts...); err == nil {
 		return builder, nil
-	} else if builder, err := NewFromFile(ctx, path, opts...); err == nil {
+	} else {
+		log.G(ctx).Tracef("could not build initrd from tarball: %s", err)
+	}
+
+	if builder, err := NewFromFile(ctx, path, opts...); err == nil {
 		return builder, nil
-	} else if builder, err := NewFromDirectory(ctx, path, opts...); err == nil {
+	} else {
+		log.G(ctx).Tracef("could not build initrd from file: %s", err)
+	}
+
+	if builder, err := NewFromDirectory(ctx, path, opts...); err == nil {
 		return builder, nil
-	} else if builder, err := NewFromOCIImage(ctx, path, opts...); err == nil {
+	} else {
+		log.G(ctx).Tracef("could not build initrd from directory: %s", err)
+	}
+
+	if builder, err := NewFromOCIImage(ctx, path, opts...); err == nil {
 		return builder, nil
+	} else {
+		log.G(ctx).Tracef("could not build initrd from OCI image: %s", err)
 	}
 
 	return nil, fmt.Errorf("could not determine how to build initrd from: %s", path)