Dump out the TLS fingerprint for the UCP controller running on this Docker Engine.
docker run --rm \
--name ucp \
-v /var/run/docker.sock:/var/run/docker.sock \
docker/ucp \
fingerprint
This utility will display the certificate fingerprint of the UCP controller running on the local engine. This can be used when scripting ‘join’ operations for the ‘–fingerprint’ flag.