Docker image does not account for EtherCalc memory leak

[lgessler]

EtherCalc leaks memory, making it common these days for admins to restart it every 24h. Our Docker image does not do this, and the Docker Ubuntu images do not easily support service managers like systemd for technical reasons.

Admins can currently just cycle the container down and up if memory consumption gets to be too much, but a better solution should be found.