CI: run devkitPro build via docker so checkout/actions keep Node

Job-level devkitpro container made actions/checkout fail (no node). Run
make inside docker run on the default ubuntu runner; works with act.

Made-with: Cursor

.github/workflows/build.yml

@@ -9,21 +9,23 @@ on:
 jobs:
   switch:
     runs-on: ubuntu-latest
-    container:
-      image: devkitpro/devkita64:latest
     permissions:
       contents: read
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Configure git safe directory
-        run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
-
+      # Build inside devkitPro image only. A job-level container would run every
+      # step there and break actions/checkout (needs Node). Same issue with `act`.
       - name: Compile (Switch .nro)
-        env:
-          DEVKITPRO: /opt/devkitpro
-        run: make -j$(nproc)
+        run: |
+          docker run --rm \
+            -v "${{ github.workspace }}:/work" \
+            -w /work \
+            -e DEVKITPRO=/opt/devkitpro \
+            devkitpro/devkita64:latest \
+            bash -lc 'make -j$(nproc)'
 
       - name: Upload .nro artifact
         uses: actions/upload-artifact@v4