diff --git a/.gitea/workflows/build-docker.yml b/.gitea/workflows/build-docker.yml
index d2fa54f..7455627 100644
--- a/.gitea/workflows/build-docker.yml
+++ b/.gitea/workflows/build-docker.yml
@@ -23,4 +23,6 @@ jobs:
       - name: Build image
         run: nix build .#docker
       - name: Push image with Skopeo
-        run: nix-shell -p skopeo --command "skopeo copy docker-archive:result docker://icr.gmem.ca/dref:arm"
+        run: |
+          nix-env -i skopeo -f '<nixpkgs>'
+          skopeo copy docker-archive:result docker://icr.gmem.ca/dref:arm"