Revert back

.github/workflows/gem-push.yml

@@ -7,8 +7,12 @@ on:
     branches: [ "main" ]
 
 jobs:
-  docker:
+  build:
+    name: Build + Publish
     runs-on: self-hosted
+    permissions:
+      contents: read
+      packages: write
     steps:
     - uses: actions/checkout@v3
     - name: Set up Ruby 3.2