Fix buildah inside container

.gitea/workflows/build.yaml

@@ -15,9 +15,13 @@ jobs:
           apt-get -y update
           apt-get -y install buildah
 
+          (echo '[storage]';echo 'driver = "vfs"') > /etc//containers/storage.conf
+
       - name: Build Ubuntu 22.04
         id: build
         uses: redhat-actions/buildah-build@v2
+        env:
+          BUILDAH_ISOLATION: chroot
         with:
           image: git.nul.ie/dev/actions-ubuntu
           tags: '22.04'