# Docker Sandboxes

50 Hacker News commenters recommended Docker Sandboxes and 39 criticized it, November 2025 to November 2026. It was recommended in 9 of 13 months.

**Verdict:** Runs AI agents in isolated microVMs that see only your project directory. Main caveat: the required Docker login.

## Why people recommend it

- Runs agents in microVMs, isolated from host (5 comments): "Docker sandboxes seem to be a good solution that also employs virtualization." ([source](https://news.ycombinator.com/item?id=49308460)) "sandboxes the agent in a micro vm running on the host and locks down access" ([source](https://news.ycombinator.com/item?id=50181915)) "switched to Docker sandboxes since they switched to mircoVMs too" ([source](https://news.ycombinator.com/item?id=47185703))
- Limits agent to project directory files (3 comments): "Locks things way down so that the agent only has access to the files you give it" ([source](https://news.ycombinator.com/item?id=48352135)) "The default file access is just the directory you create the sandbox under." ([source](https://news.ycombinator.com/item?id=50041182)) "You only mount the project dir so you can only loose your current changes" ([source](https://news.ycombinator.com/item?id=49243382))
- Easy to use daily, works out of box (4 comments): "I’ve been using this pretty extensively for a few months on Mac and Linux and have been super happy with it." ([source](https://news.ycombinator.com/item?id=49243486)) "Concept is great - works quite well - I often have multiple short lived sandboxes running at once." ([source](https://news.ycombinator.com/item?id=49251284)) "CLI works on Fedora. Been using it daily for ~ a week." ([source](https://news.ycombinator.com/item?id=49245923))

## What people warn about

- Requires a Docker login (7 comments): "I am sad that they are asking for a login here though, which doesn't make any sense to me." ([source](https://news.ycombinator.com/item?id=49240155)) "Like others here I'm also saddened by the login requirement" ([source](https://news.ycombinator.com/item?id=49241077)) "Though, they need to remove the login requirement." ([source](https://news.ycombinator.com/item?id=49240214))
- Not available on Linux (3 comments): "it's not available for Linux (so no AWS, no GCP, etc.)" ([source](https://news.ycombinator.com/item?id=47397099)) "When I previously looked it did not (the reason being that they were already using VMs on Windows/macOS but not on Linux)." ([source](https://news.ycombinator.com/item?id=49241053)) "I hope one day Linux will be able to support the exclusive MacOs/Windows technology of Docker Sandboxes." ([source](https://news.ycombinator.com/item?id=49240351))
- Closed source and tied to Docker (2 comments): "I'd say that they are on a good path. However in the end I'd expect it to be a standalone application and ecosystem, not tied to docker/moby" ([source](https://news.ycombinator.com/item?id=47045947)) "the disk space usage was growing significantly, I need to login multiple times for each sandbox, it's closed source" ([source](https://news.ycombinator.com/item?id=49242035))
- Fear of future paywalls and limits (2 comments): "An enforced required login is a net negative value - it means rug pulls in the future." ([source](https://news.ycombinator.com/item?id=49243045)) "Tomorrow they're gonna add limits on sandbox runs without a premium account too" ([source](https://news.ycombinator.com/item?id=49240307))

## Alternatives hackers recommend

- [NVIDIA OpenShell](https://hackerapproved.com/p/openshell.md): 36 recommend
- [Claude Code sandbox](https://hackerapproved.com/p/claude-code-sandbox.md): 16 recommend
- [MXC (Microsoft Execution Containers)](https://hackerapproved.com/p/mxc.md): 15 recommend
- [microsandbox](https://hackerapproved.com/p/microsandbox.md): 13 recommend
- [Era](https://hackerapproved.com/p/era.md): 13 recommend

## Cite as

Hacker Approved, "Docker Sandboxes", https://hackerapproved.com/p/docker-sandboxes/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).