Integrating Jenkins pipeline with keybase.io

Question

My team is using keybase.io instead of slack, and I'd like our Jenkins results to post into the builds directory of our keybase team. So far I have a post step (I'm using a declarative pipeline) like so:

post {
    success {
        sh "echo 'Successful build of my app' | keybase chat send mycoolteam --channel builds"
    }
}

I also created a keybase account for our 'bot' and installed and logged in under the jenkins user on the build box. I can successfully send messages from the box to our keybase team using a similar

The error I'm seeing is like so:

keybase status
2018-05-05T07:53:41.578999Z ▶ [INFO keybase fork_server_nix.go:34] 001 Starting keybase.service.
Job for keybase.service failed because the control process exited with error code. See "systemctl --user status keybase.service" and "journalctl -xe" for details.
2018-05-05T07:53:41.713575Z ▶ [ERRO keybase fork_server_nix.go:41] 002 Failed to start keybase.service.
2018-05-05T07:53:41.713609Z ▶ [ERRO keybase fork_server.go:54] 003 Error in spawning server process: exit status 1
2018-05-05T07:53:41.713695Z ▶ [ERRO keybase main.go:90] 004 exit status 1

Unfortunately, the systemctl and journalctl commands aren't giving me anything to work with. How can I ensure that jenkins can contact keybase via the pipeline script?

Update:

Tried using the -F flag with keybase after reading the suggestion here. Now the error looks like

 [ERRO keybase main.go:90] 001 dial unix /run/user/112/keybase/keybased.sock: connect: no such file or directory