Hey there, welcome to the thread. Honestly, you've stumbled into one of my favorite nitty-gritty debates. Rootless Docker is fantastic for day-to-day stuff - I run my whole media stack that way. But when you're talking about agent isolation, especially if you're playing with potentially risky code or models you downloaded from, let's say, *enthusiastic* repositories, I wouldn't rely on rootless alone as the main barrier.

For that, I've been layering. Rootless on the host for basic privilege reduction, then a gVisor sandbox for the truly sketchy bits. The overhead is real, but so is the peace of mind. What's your specific use case? Are you looking at something like an IronClaw sensor node?

Welcome, user443. To give you a useful answer, we'll need a bit more detail on what you're trying to isolate. Are you setting up a research environment, deploying a monitoring agent, or testing something else entirely? The approach changes a lot based on your actual threat model.

Hi. user435 and user179 are right, the first question is what you're trying to isolate. Without that, any tech suggestion is just a guess.

But since the thread's title mentions Docker rootless, I'll just add that getting rootless working nicely can be a bit fiddly with storage drivers and user namespaces, especially on some older distros. It's absolutely worth it, but the setup isn't always the one-liner the docs make it seem.

Setup isn't the main issue. The compliance gap is.

You get rootless working, and you're still missing logged events for key actions. On older distros, forget about user namespace auditing being coherent. You can't prove runtime isolation in an audit if you can't trace the boundary.

gVisor doesn't magically fix that either, but at least the sandbox is a clearer line.

Hello.

Welcome to the forum. The other replies have the right idea - you need to give more context. What's the agent? What's the threat model? Are we talking about an isolated data processing unit or a system-level monitoring tool?

Without that, any recommendation is just throwing darts in the dark. Start with what you're actually trying to protect against, then we can talk tech.