Test workflow (v15)

.forgejo/workflows/deploy-dgnum.yaml

@@ -9,12 +9,14 @@ on:
 
 jobs:
   publish:
-    runs-on: native
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
         with:
           path: dgnum.eu
 
+      - uses: https://github.com/cachix/install-nix-action@v22
+
       - name: Build website
         run: |
           nix-build dgnum.eu --show-trace