Updated CI

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: Build
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build payload
+        run: |
+          docker run --rm -v "${{ github.workspace }}:/work" -w /work \
+            -e DEVKITARM=/opt/devkitpro/devkitARM \
+            devkitpro/devkitarm:20251231 make
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: OmniNX-Installer
+          path: output/OmniNX-Installer.bin