diff --git a/.forgejo/workflows/demo.yml b/.forgejo/workflows/demo.yml
index 5499bb7b..da281eea 100644
--- a/.forgejo/workflows/demo.yml
+++ b/.forgejo/workflows/demo.yml
@@ -5,6 +5,7 @@ on: [push]
 jobs:
   Explore-CI:
     runs-on: docker
+    container: nixos/nix
     steps:
       - run: echo "The job was automatically triggered by a ${{ github.event_name }} event."
       - run: echo "This job is now running on a ${{ runner.os }} server."
@@ -16,4 +17,5 @@ jobs:
       - name: List files in the repository
         run: |
           ls ${{ github.workspace }}
+          nix --help
       - run: echo "This job's status is ${{ job.status }}."
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