Add the droplet hostkey to the executing server

 doex ssh.hostkey <droplet_id_or_name_or_tag>

You can provide the droplet ID, reference it by name, or by tag (if you add the --tag option)

For example

doex ssh.hostkey my_app

This is useful after you have first created a droplet so that you can then SSH into that server without any human intervention asking if you want to continue.

The authenticity of host '99.98.97.97 (99.98.97.97)' can't be established.
ECDSA key fingerprint is SHA256:ABCDEFHIK/def.
Are you sure you want to continue connecting (yes/no)?

If you have a specific config file, mix help doex.config then add it as an environment variable

DOEX_CONFIG=/tmp/my.doex doex ssh.hostkey my_app