So much cool informations about kernel interfaces and docker:

• Docker is basically built on top of kernel namespaces,
• On Unix systems, every processes information is stored inside /proc
• Control the resources used through /sys/fs/cgroup interface (cgroup → control group)
  • Inside each dir of cgroup, there is a docker directory ! These directories contain informations for each container.

Wow it is great to know the basics of the container under the hood !