Option to not store s3 access key and secret key

[xxxliqu1dxxx]

@jrdemasi not sure if you had a chance to review this:

Unraid OS and how Kopia stores password

Keyring is unfortunately unreliable on Linux (as you discovered) so it’s disabled by default. I’d recommend the following options: Get dbus-launch installed on your machine, but configuration of that may be non-trivial without full desktop environment. (Do nothing) and have kopia persist base64-encoded password in local file. The file is only readable by the user that started Kopia and root which is generally assumed to be trusted. Storing plaintext credentials in files under user directo…

He’s offering some workarounds to a similar problem + indicating this S3 specific issue will be looked at for future releases.