Blinded by the light.

I just learned that Docker originally was just an application of LXC, Ubuntu’s container management software.

LXC containers “will typically be long running and based on a clean distribution image”, while “Docker focuses on ephemeral, stateless, minimal containers that won’t typically get upgraded or re-configured but instead just be replaced entirely”.

This 12-part series about LXD 2.0 (a daemon to drive LXC containers) by its project leader, Stéphane Graber, provides a very good introduction into other corners of virtualization with containers.