Fix username in nightly test job.
diff --git a/.github/workflows/test-new-xmake-nightly.yml b/.github/workflows/test-new-xmake-nightly.yml
index 3dce3ad..0c89a5a 100644
--- a/.github/workflows/test-new-xmake-nightly.yml
+++ b/.github/workflows/test-new-xmake-nightly.yml
@@ -12,7 +12,7 @@
     runs-on: ubuntu-latest
     container:
       image: ghcr.io/cheriot-platform/devcontainer:latest
-      options: --user 1001
+      options: --user 1000
     steps:
     - name: Checkout repository and submodules
       uses: actions/checkout@v3