Linux Containers in (Less Than) 100 Lines of Shell

Explore how to create Linux containers using less than 100 lines of shell commands in this conference talk by Michael Kerrisk at NDC Security in Oslo. Learn the fundamental nature of containers and the underlying Linux kernel mechanisms while building a simple container with features comparable to Docker. The presentation demonstrates how to create a container with a root filesystem, implement isolation using Linux namespaces, and set up control groups (cgroups) to limit resource consumption. Discover the concept of having superuser privileges inside a container while remaining unprivileged outside it. Using basic shell commands and the Busybox tool, gain practical insights into container technology that will deepen your understanding of how modern containerization works.