Docker Sandboxes: a microVM with secrets manager and network policies to contain rogue agents
mdelapenya · x · 2026-09-08
Testcontainers maintainer mdelapenya breaks down Docker Sandboxes (sbx): not just another 'sandbox', but a microVM with a specialized container runtime, shipping a secrets manager plus network/filesystem policies to protect your host from agents doing nasty things.
- microVM architecture with a dedicated container runtime.
- Built-in secrets manager swaps credentials on the fly so agents never see real secrets.
- Network and filesystem policies allow/block domains on demand to control agent egress.
- Docs, conference talks, and a workshop are available.
Related event: Docker Sandboxes: microVM isolation for AI agents(5 posts)→
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