check for tag before releasing

check-for-tag.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+TAGS="$(git tag --points-at HEAD)"
+if [ -n "$TAGS" ]; then
+  TAG=$(echo "$TAGS" | grep -E '^v[0-9]+.[0-9]+.[0-9]+$' | sort -V | tail -1)
+  echo "RELEASE_TAG=$TAG" >> "$GITHUB_ENV"
+else
+  echo "No release tag found"
+fi