Create build.yml

Update build.yml

.github/workflows/build.yml

@@ -0,0 +1,21 @@
+name: Nixos
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        machine: ["t1000", "t800"]
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4.1.7
+      - name: "Install Nix"
+      - uses: cachix/install-nix-action@v27
+
+      - name: "Build Nix Config"
+      - run: |
+          nix build .#nixosConfigurations.${{ matrix.machine }}.config.system.build.toplevel
+