diff --git a/.gitea/workflows/demo.yaml b/.gitea/workflows/demo.yaml
index f18880c..2be7ab4 100644
--- a/.gitea/workflows/demo.yaml
+++ b/.gitea/workflows/demo.yaml
@@ -4,8 +4,11 @@ on: [push]
 
 jobs:
   amd-docker:
-    runs-on: arm
+    runs-on: docker
+    container: node:18-bullseye
     steps:
+      - name: Install prerequisites
+        run: apt update && apt install -y zstd
       - name: Cache Nix store
         uses: actions/cache@v3.3.1
         id: nix-cache