Limit the global usage of all docker containers on the server.

[ar-siddiqui]

With #25 we are specifying max resources a process can use but it is still possible that if 100s of processes are requested by users simultaneously then the server may be choked by Docker processes as by default the docker can use all resources of the host.

We can prevent this by limiting global docker resources using the strategy specified below.

rhel - How to limit Docker total resources? - Unix & Linux Stack Exchange
https://unix.stackexchange.com/questions/537645/how-to-limit-docker-total-resources

Limit docker CPU and memory resource usage
https://gist.github.com/jpcaparas/95d6f81e70e7490713e60b2a484c32a4

Docker resource management via Cgroups and systemd | by Mehmet Ali Baykara | Medium
https://baykara.medium.com/docker-resource-management-via-cgroups-and-systemd-633b093a835c