DockerSlim (docker-slim): Optimize and secure your Docker containers (free and open source)...

While editing the capabilities page of the how containers work zine, I found myself trying to explain why strace doesn’t work in a Docker container. (more…)

Most developers think of COBOL as a dead language. Surprisingly, the TIOBE Index for October 2016 lists COBOL as the 24th most popular…

The Alpine Linux distribution was born as a fork of the LEAF (Linux Embedded Appliance Framework) project, which itself was a fork of an extremely tiny distro, the now-defunct Linux Router Project (LRP). The concept behind Alpine was to create a light and... (more…)

When building Docker containers, you should be aware of the PID 1 zombie reaping problem. That problem can cause unexpected and obscure-looking issues when you least expect it. This article explains the PID 1 problem, explains how you can solve it, and pr... (more…)