@@ -271,6 +271,9 @@ func (b *Builder) runContextCommand(args []string, allowRemote bool, allowDecomp

 func (b *Builder) pullImage(name string) (*imagepkg.Image, error) {

 	remote, tag := parsers.ParseRepositoryTag(name)

+	if tag == "" {

+		tag = "latest"

+	}

 	pullRegistryAuth := b.AuthConfig

 	if len(b.AuthConfigFile.Configs) > 0 {

 		// The request came with a full auth config file, we prefer to use that