Merge pull request #22 from seb-daehne/renovate/docker-setup-buildx-a…

…ction-3.x

Update docker/setup-buildx-action action to v3

.github/workflows/docker-image.yml

@@ -22,7 +22,7 @@ jobs:
       - name: check setup
         run: "find ."
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v3
       - name: Login to DockerHub
         uses: docker/login-action@v3 
         with: