This box is based on the initial Fedora 35 release.
Get the Packer software.
To build the VirtualBox box add the Packer software to your path, switch to the root of the Packer build directory and run the Packer command. Amend your paths as needed.
set PATH=%USERPROFILE%\u01\software\hashicorp\packer_1.8.7_windows_amd64;%PATH%
cd \git\oraclebase\vagrant\packer\f35
packer build -only virtualbox-iso f35.json
This will create a box called "f35-x86_64-virtualbox.box" in the "build" directory.
You can then upload the resulting box to Vagrant Cloud, or just use it locally by adding it to you local box list.
vagrant box remove oraclebase/fedora-35
vagrant box add build/f35-x86_64-virtualbox.box --name oraclebase/fedora-35