diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ce9daf4..c8545d5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -39,6 +39,12 @@ jobs:
           buildfile: ${{ matrix.minor }}/${{ matrix.os }}/Dockerfile
           tags: 'ci/ruby:${{ github.sha }}'
 
+      - name: Check for image
+        uses: actions/checkout@v4
+
+      - id: check-images
+        run: docker images
+
       - name: Run Trivy vulnerability scanner
         uses: aquasecurity/trivy-action@master
         with:
diff --git a/README.md b/README.md
index 4445ae5..dac4e56 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # Ruby container based on ubuntu
 
+[![License](https://img.shields.io/github/license/betadots/container-ruby.svg)](https://github.com/betadots/container-ruby/blob/main/LICENSE)
+[![Sponsored by betadots GmbH](https://img.shields.io/badge/Sponsored%20by-betadots%20GmbH-blue.svg)](https://www.betadots.de)
+
+---
+
 this is mainly a fork of https://github.com/docker-library/ruby
 
 only change is:
@@ -15,3 +20,7 @@ to
 ```shell
 FROM buildpack-deps:jammy
 ```
+
+## Why not upstream?
+
+[https://github.com/docker-library/ruby/pull/247#issuecomment-442621857]