fix

.github/workflows/nightly.yml

@@ -3,6 +3,9 @@ name: Nightly Build
 on:
   schedule:
     - cron: '0,15,30,45 * * * * *'  # This schedule runs every night at midnight UTC
+  push:
+    tags:
+      - "v*.*.*"
 
 jobs:
   nightly:
@@ -16,26 +19,34 @@ jobs:
 
     - name: Prepare release body
       run: |
+        if [[ ${{ github.ref }} =~ ^refs/tags/(.*) ]]; then
+          RELEASE_TAG=${BASH_REMATCH[1]}
+        else
+          RELEASE_TAG=nightly
+        fi
+        echo "RELEASE_TAG=$RELEASE_TAG" >> $GITHUB_ENV
         RELEASE_DATETIME=$(date --rfc-3339=seconds)
         cat <<EOF > release_template.md
-        Release created at $RELEASE_DATETIME
+        Release $RELEASE_TAG created from $GITHUB_SHA at $RELEASE_DATETIME
         EOF
         envsubst < release_template.md > release_body.md
 
     - name: Build source tarball
       run: git archive --format=tar HEAD | gzip > archive.tgz
 
-    - name: Remove existing tag
+    - name: Remove existing mutalbe tag "nightly"
       # https://github.com/softprops/action-gh-release/issues/171
       run: git push origin :refs/tags/nightly || true
+      # https://docs.github.com/en/actions/using-jobs/using-conditions-to-control-job-execution
+      if: $RELEASE_TAG == "nightly"
 
     - name: Create or overwrite a releae
       # https://github.com/actions/upload-release-asset has been replaced by https://github.com/softprops/action-gh-release
       uses: softprops/action-gh-release@v1
       with:
         token: ${{ secrets.MY_GITHUB_TOKEN }}  # Use the secret as an environment variable
         prerelease: true
-        tag_name: nightly
+        tag_name: $RELEASE_TAG
         # The body field does not support environment variable substitution directly.
         body_path: release_body.md
         files: |