Utility command which switches into a specified docker container's namespace and execute a command. It allows two use-cases:

• Admin commands

Usage:

geard-switchns <docker container name> <command> [args]...

Allows a user with CAP_SYS_ADMIN capability to switch into a specified docker container and execute a command. Typical use for this would be to run admin commands within a container.

• User SSH

Add geard-switchns as a command to the .authorized_keys file. Eg:

command="/usr/sbin/geard-switchns" ssh-rsa AAAA...== user@host

When the user SSH's into the host machine, SSH runs geard-switchns. The utility then looks up a docker container with the same name as the username and starts a bash shell within the container.

Apache Software License (ASL) 2.0.