"A Container Is Just a Process"

Assemble the thing you already use every day.

In this interactive Linux lesson from Stencel Academy you don't just read — you type real commands like docker run alpine, ps, lsns and watch the machine respond on a live, animated map. It is part of the free How Linux Works course.

Before this lesson

Builds on: cgroups.

What you'll practise

• docker ps — Docker's view of the same process.
• cat /proc/9001/cgroup — On the host, it's in a docker cgroup.
• nsenter -t 9001 -a sh — Step inside the container — no magic.

Terms you'll learn

Check your understanding