This is just a space for me to share some notes and thoughts. I hope someone finds something useful here. Zola 2025-10-05T00:00:00+00:00 https://suchaboris.com/tags/devcontainers/atom.xml 2025-10-05T00:00:00+00:00 2025-10-05T00:00:00+00:00 Unknown https://suchaboris.com/blog/docker-in-docker/ <p>For people who already knew this, it might be trivial, but I learned something interesting last week.</p> <p>I knew you can run pretty much anything in <strong>Docker</strong>. And I knew Docker with <strong>Compose</strong> or equivalent tools can be used to run a whole dev environment or something like <strong>Testcontainers</strong>. I'd even heard at some point that you can potentially run <strong>Docker inside Docker</strong>, but I either didn't pay attention or had no use for it. And that's what blew my mind when I tried it last week.</p> <p>As I'm building out my <strong>homelab</strong>, I set up a full <strong>Kubernetes</strong> cluster in a <strong>devcontainer</strong>, and I can easily test new deployments locally. Using my own <strong>YAML</strong> or <strong>Helm</strong>—it doesn't matter. Everything is in a container. The whole <strong>K8s</strong> cluster inside Docker. What? It still blows my mind.</p> <p>If you want to see how I set it up, check out my <a rel="external" href="https://github.com/prymost/homelab/tree/main/.devcontainer">Homelab DevContainer configuration</a> on GitHub.</p>