Skip to content


Docker commands

  • docker system prune - Remove unused data. Useful when docker eats all available disk space on our computer. Pass the --all argument to delete all unused images, not just dangling images.

    bash docker system prune --all

Container init programs

  • runit - A UNIX init scheme with service supervision. (Source Code) C
  • tini - A tiny but valid init for containers. Used by conda-forge. Probably the best choice. C
  • s6 - The s6 supervision suite. (Source Code) C
  • supervisor - Does not pick up zombie processes. Python

Docker machine

  • In order to log in to one of the worker machines, use ssh certificates from the /root/.docker/machine/machines folder.


Docker does not correctly detect the MTU (maximum transfer unit) of the container. It must be specified manually in the /lib/systemd/system/docker.service file:

ExecStart=/usr/bin/docker daemon -H fd:// –mtu=1400

Additional resources