fixup! fixup! fixup! Add install nix and build container steps

.gitea/workflows/build-container.yml

@@ -4,12 +4,13 @@ jobs:
   build-container:
     runs-on: ubuntu-22.04
     steps:
-      - run: echo echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
       - name: Checkout repo
         uses: actions/checkout@v4
       - run: ls -l
       - name: Install Nix
         uses: cachix/install-nix-action@v31
+        with:
+          enable_kvm: false
       - name: Build container
         run: nix build .#docker
       - run: find result/*