Set up password-less access from internally

I just noticed that OpenSSH_jll defines the following:
which has me thinking - could we not add a passwordless connection from within this package? I realized I also had to use `ssh-copy-id pi@192.168.4.2`, which is not defined by OpenSSH_jll. But perhaps the defined `ssh_agent` could do this? Alternatively, it is also possible to run arbitrary commands via `run`, so this should be doable either way.