Build and run:
docker build --tag 'docker-iodine:local' .
docker run --rm -ti --cap-add NET_ADMIN -e IODINE_HOST=<tunneldomain> -e IODINE_PASSWORD=<pass> -e docker-iodine:local
Run from docker hub:
docker run -d --restart=always --cap-add NET_ADMIN -e IODINE_HOST=<tunneldomain> -e IODINE_PASSWORD=<pass> -e EXTERNAL_IP=<externalserverip> --name iodine thebiggerguy/iodine
!!! WARNING !!!
via iodine's own man page "Only the first 32 characters will be used." for the password.