Store attached File on device

Hey Guys,

I’m running a self hosted bitwarden server, but it’s not connected to the internet for safety reasons.
Some of my logins have an attached file which is (at least it seems like this) not stored on my Device (I’m using iOS and Windows client). Can I somehow change this behavior, that the file is stored on my device not only in the cloud?
I don’t store huge files so I don’t expect a huge impact for the syncing, a SSH key isn’t that much more data than a couple of logins.

Thank you in advance,