upgraded API-version for Skopeo

.gitea/workflows/build.yml

@@ -104,20 +104,23 @@ jobs:
           tags: ${{ steps.metadata.outputs.tags }}
           labels: ${{ steps.metadata.outputs.labels }}
 
-      - name: Push Image via Skopeo (Convert to OCI)
+      - name: Push Image via Skopeo (Convert to OCI via Archive)
         if: github.event_name != 'pull_request'
         env:
           GENERATED_TAGS: ${{ steps.metadata.outputs.tags }}
-          # Zwingt Skopeo, die modernere API-Version für den Docker-Daemon zu nutzen
-          DOCKER_API_VERSION: "1.44"
         run: |
           for tag in $GENERATED_TAGS; do
+            echo "Saving $tag to temporary tarball..."
+            docker save "$tag" -o image.tar
+
             echo "Pushing and converting $tag to clean OCI format..."
             skopeo copy \
               --format oci \
               --dest-creds "${{ github.repository_owner }}:${{ secrets.REGISTRY }}" \
-              docker-daemon:$tag \
+              docker-archive:image.tar \
               docker://$tag
+
+            rm -f image.tar
           done
 
       - name: Install envsubst dependencies