I wonder if you can just use on: push without tags

.github/workflows/build.yml

@@ -1,6 +1,6 @@
 name: Build jar
 
-on: workflow_dispatch
+on: push
 
 jobs:
   build:
@@ -20,5 +20,17 @@ jobs:
         with:
           name: cubingPaper
           path: target/paperspigot-1.8.8-R0.1-SNAPSHOT.jar
+      - name: Create Release
+        uses: ncipollo/release-action@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+            artifacts: target/paperspigot-1.8.8-R0.1-SNAPSHOT.jar
+            draft: false
+            prerelease: true
+            releaseName: ${{ github.ref }}
+            releaseNotes: |
+                This is an automated release.
+