Add Buildah build check

.gitea/workflows/buildah-check.yaml

@@ -0,0 +1,25 @@
+name: Check Buildah Build (Safe)
+on: [push, workflow_dispatch]
+
+jobs:
+  buildah-build:
+    runs-on: macos-m1
+    steps:
+      - name: Install Dependencies
+        run: |
+          if [ -f /etc/alpine-release ]; then
+            # Install buildah and fuse-overlayfs for rootless builds
+            apk add --no-cache nodejs git buildah fuse-overlayfs
+          fi
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build with Buildah
+        run: |
+          echo "FROM alpine" > Dockerfile
+          echo "RUN echo 'Buildah build successful'" >> Dockerfile
+          
+          # 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
+          buildah build --storage-driver=vfs -t test-image .