Do not append []string{""} to command to preserve Docker compatibility

Signed-off-by: Andrey Klimentyev <andrey.klimentyev@flant.com>

pkg/cri/opts/spec.go

@@ -63,9 +63,11 @@ func WithProcessArgs(config *runtime.ContainerConfig, image *imagespec.ImageConf
 				args = append([]string{}, image.Cmd...)
 			}
 			if command == nil {
+				if !(len(image.Entrypoint) == 1 && image.Entrypoint[0] == "") {
 					command = append([]string{}, image.Entrypoint...)
 				}
 			}
+		}
 		if len(command) == 0 && len(args) == 0 {
 			return errors.New("no command specified")
 		}