add etc/tag.sh

Author: E-Fir

etc/tag.sh

@@ -0,0 +1,8 @@
+#! /usr/bin/env bash
+
+set -euox pipefail
+
+BASE_TAG="v1.0.1"
+TAG="$(git describe --tags --exclude "${BASE_TAG}.*.*" | sed 's/-/./g')"
+git tag "${TAG}"
+git push origin "${TAG}"