Nix image testing

.gitea/workflows/demo.yaml

@@ -51,3 +51,19 @@ jobs:
         run: |
           ls ${{ gitea.workspace }}
       - run: echo "🍏 This job's status is ${{ job.status }}."
+  amd-nix:
+    runs-on: nix
+    steps:
+      - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
+      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
+      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
+      - name: Check out repository code
+        uses: https://github.com/RouxAntoine/checkout@v3.5.4
+        with:
+          ref: master
+      - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
+      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+      - name: List files in the repository
+        run: |
+          ls ${{ gitea.workspace }}
+      - run: echo "🍏 This job's status is ${{ job.status }}."