Fix gamecube-iso: use docker run instead of job container

actions/checkout requires Node.js which the libogc2 container lacks.
Checkout on the runner, then run the full build inside the container
via docker run with the workspace mounted.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/build.yml

@@ -137,35 +137,26 @@ jobs:
 
   build-gamecube-iso:
     runs-on: ubuntu-latest
-    container:
-      image: ghcr.io/extremscorner/libogc2:latest
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      - name: Install additional dependencies
-        run: |
-          apt-get update
-          apt-get install -y \
-            python3 \
-            python3-pip \
-            python3-polib \
-            python3-pil \
-            python3-dotenv \
-            python3-pyqt5 \
-            python3-opengl \
-            xorriso
-          dkp-pacman -Syu --noconfirm
-          dkp-pacman -S --needed --noconfirm \
-            gamecube-sdl2 \
-            ppc-liblzma \
-            ppc-libzip \
-            gamecube-tools \
-            ppc-libmad \
-            ppc-zlib-ng \
-            ppc-bzip2 \
-            ppc-zstd
       - name: Build GameCube ISO
-        run: ./scripts/build-gamecube-iso.sh
+        run: |
+          docker run --rm \
+            -v "${{ github.workspace }}:/workdir" \
+            -w /workdir \
+            ghcr.io/extremscorner/libogc2:latest \
+            /bin/bash -c "
+              apt-get update &&
+              apt-get install -y \
+                python3 python3-pip python3-polib python3-pil \
+                python3-dotenv python3-pyqt5 python3-opengl xorriso &&
+              dkp-pacman -Syu --noconfirm &&
+              dkp-pacman -S --needed --noconfirm \
+                gamecube-sdl2 ppc-liblzma ppc-libzip \
+                gamecube-tools ppc-libmad ppc-zlib-ng ppc-bzip2 ppc-zstd &&
+              ./scripts/build-gamecube-iso.sh
+            "
       - name: Copy output files
         run: |
           mkdir -p ./git-artifcats/Dusk