hopefully works now

.forgejo/workflows/test.yaml

@@ -11,7 +11,7 @@ jobs:
         run: dnf install skopeo -y
       - uses: https://git.ws-essen.de/actions/skopeo-login-action@main
         with:
-          registry: ${{ vars.DOCKER_REGISTRY }}
+          registry: git.ws-essen.de
           password: ${{ secrets.DOCKER_PUSH_KEY }}
       - name: copy alpine image to registry
-        run: skopeo copy docker://alpine:latest docker://${{ vars.DOCKER_REGISTRY }}/alpine:latest
+        run: skopeo copy docker://alpine:latest docker://registry.ws-essen.de/alpine:latest

action.yml

@@ -15,5 +15,5 @@ runs:
   using: "composite"
   steps:
     - run: |
-        echo ${{ inputs.password }} > skopeo login -u ${{ inputs.username }}
+        echo ${{ inputs.password }} | skopeo login -u ${{ inputs.username }}
       shell: bash