Update ~/.ssh/config
to include:
Host localhost
UserKnownHostsFile /dev/null
and then start the server
HOST_PRIVATE_KEY="$(cat .ssh/host_private_key)" go run .
# or
docker build . -t authssh:latest
docker run -p 4202:4202 -p 8080:8080 -e "HOST_PRIVATE_KEY=$(cat .ssh/host_private_key)" authssh:latest