Attempt AMD64 cross-build

.gitea/workflows/buildah-check.yaml

@@ -23,4 +23,18 @@ jobs:
           # Buildah needs some storage configuration tweaks for running inside a container
           # We use the 'vfs' driver which is slow but works reliably inside containers without special privileges
           # We use '--isolation=chroot' to avoid cgroup permission issues inside the runner container
-          buildah build --storage-driver=vfs --isolation=chroot -t test-image .
+          buildah build --storage-driver=vfs --isolation=chroot -t test-image-arm64 .
+
+      - name: Build for AMD64 (Cross-Platform Check)
+        run: |
+          echo "FROM alpine" > Dockerfile.amd64
+          echo "RUN echo 'AMD64 Build successful'" >> Dockerfile.amd64
+          
+          # Attempt to build for linux/amd64
+          # This requires QEMU to be configured on the host or installed in the runner
+          buildah build \
+            --storage-driver=vfs \
+            --isolation=chroot \
+            --platform linux/amd64 \
+            -f Dockerfile.amd64 \
+            -t test-image-amd64 .