To run this container use (do not forget to use your HOSTID/HOSTNAME/PASSWORD):
docker run -d \
-e FIP_HOSTID=000000 \
-e FIP_HOSTNAME=sub.mydomain.tld \
-e FIP_PASSWORD=mypassword \
-e FIP_INTERVAL=5m \
--name festeip-ip-updater evilmoe/festeip-ip-updater:latest