fixup! Update ci workflow to work with forgejo

.github/workflows/ci.yml

@@ -24,9 +24,8 @@ jobs:
           git config --local --unset http.${{ github.server_url }}/.extraheader
           git config --local http.${{ github.server_url }}/${{ github.repository }}.git/info/lfs/objects/batch.extraheader "$AUTH"
           git lfs pull
-      - uses: "https://github.com/DeterminateSystems/nix-installer-action@main"
-      - uses: "https://github.com/DeterminateSystems/magic-nix-cache-action@main"
-      - name: Run `nix build`
+      - name: Run Nix Build
+        uses: "docker://hub.docker.com/nixpkgs/nix-flakes:nixos-24.05"
         run: nix build .
 #      - uses: actions/upload-pages-artifact@v3
 #        with: