There was some problem yesterday when I logged on to the server, and I messed it up because I didn't see docker containers or images running - however the node appeared to be online.
I restarted the docker, and then the node went down. A simple restart didn't help, thus I had to pull the image, and download the snapshot. Should be online soon.
Sorry for the inconvenience - and one lesson learned: don't touch it when it is working fine!