Ask HN: What is the best source to learn Docker in 2023?

Post by selcuka » Sun, Jan 29, 2023, 11:19 PM UTC

mmcnl wrote: post #74

selcuka wrote: post #20

Earlier quoted context omitted.

Note that one can also use a lightweight Kubernetes distribution such as Minikube [1] during development so that the workflow is similar for both development and production. [1] https://minikube.sigs.k8s.io/docs/start/

But this often not necessary, because if you can run a production Kubernetes cluster, you can also run a dev Kubernetes cluster, so no need to run a local Kubernetes distribution. My workflow typically looks like this: 1. Run app locally during dev without Docker 2. Build and run Docker image locally with Docker compose 3. Deploy to development Kubernetes cluster 4. Deploy to production Kubernetes cluster

Post by allarm » Mon, Jan 30, 2023, 7:51 AM UTC

moonchrome wrote: post #52

jpgvm wrote: post #23

I would start with understanding what containers are. Read up on what namespaces and cgroups are. Understand first what a container is, what it gives you and how Docker (vs other containerizers) fits into the picture. The first fundamental thing to understand is that containers are merely processes that have some sandboxing and perhaps limits applied to them, mem_cg, CFQ throttling, etc. Once you have that under your…

That's like someone asking how to learn C and you suggest starting with assembly. It's the most roundabout way - and OP is conflating docker with CI/CD, referencing PHP and Node - it's probably safe to say they aren't looking for a deep dive. Plus - knowing how it runs under the hood doesn't mean you know how to use docker itself.