hotfix: set version to tag if commitid is empty in Makefile

Makefile

@@ -1,4 +1,7 @@
-VERSION ?= $(shell git tag -l --sort=v:refname | tail -1)
+VERSION ?=
+ifeq ($(VERSION),)
+    VERSION = $(shell git tag -l --sort=v:refname | tail -1)
+endif
 GIT_COMMIT ?= $(shell git describe --match=NeVeRmAtCh --always --abbrev=7)
 BUILD_TIME ?= $(shell date +"%Y-%m-%dT%H:%M:%SZ")
 BRANCH ?= $(shell git rev-parse --abbrev-ref HEAD)