use different variable

Author: nkubala

cmd/root.go

@@ -44,6 +44,7 @@ import (
 )
 
 var json bool
+var isDaemon bool
 
 var save bool
 var types diffTypes
@@ -161,8 +162,7 @@ func getImageForName(imageName string) (pkgutil.Image, error) {
 		}
 		elapsed := time.Now().Sub(start)
 		logrus.Infof("retrieving image from daemon took %f seconds", elapsed.Seconds())
-		// TODO(nkubala): remove this when we can set compression level in containerregistry
-		noCache = true // force noCache if image is in daemon
+		isDaemon = true
 	} else {
 		// either has remote prefix or has no prefix, in which case we force remote
 		imageName = strings.Replace(imageName, RemotePrefix, "", -1)
@@ -232,7 +232,8 @@ func getImageForName(imageName string) (pkgutil.Image, error) {
 }
 
 func getExtractPathForImage(imageName string, image v1.Image) (string, error) {
-	if noCache {
+	if isDaemon {
+		// since we have to compress the image to get the digest, don't cache daemon images
 		return getExtractPathForName(imageName)
 	}
 	start := time.Now()