fix formatting

internal/builders/docker/pkg/builder.go

@@ -523,8 +523,8 @@ func saveToTempFile(verbose bool, readers ...io.Reader) ([]string, error) {
 	var wg sync.WaitGroup
 	// We need to make sure the fileChannel has enough buffere space to hold everything,
 	// since it won't be processed until the very end.
-	var fileChannel = make(chan tempFileResult, len(readers))
-	var printChannel = make(chan string)
+	fileChannel := make(chan tempFileResult, len(readers))
+	printChannel := make(chan string)
 
 	// Start a goroutine to process each Reader concurrently.
 	for _, reader := range readers {