test if nix available before uploading

.gitea/workflows/deploy.yaml

@@ -22,8 +22,6 @@ jobs:
           mkdir -p /etc/nix
           cp ./scripts/upload-to-cache.sh /etc/nix/
           chmod +x /etc/nix/upload-to-cache.sh
-          cat /var/secrets/cache_privkey
-          echo "$CACHE_PRIVKEY"
       - uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |

scripts/upload-to-cache.sh

@@ -2,6 +2,10 @@
 set -eu
 set -f
 
+if ! nix; then
+  exit 0
+fi
+
 export IFS=' '
 echo "Uploading paths" $OUT_PATHS
 exec nix copy --to "ssh://localhost:5000" $OUT_PATHS