Docker Sandboxes: How microVMs provide container isolation across platforms
By
@devopsbriefly.bsky.social
Crusty in the right places. Worth the chew.
Summary
Docker Sandboxes use microVMs to provide enhanced container isolation by running each container with its own isolated Docker daemon instance and kernel. MicroVMs are lightweight virtual machines that start and tear down quickly while using limited system resources. They run on native hypervisors across Linux (KVM), macOS (Hypervisor.framework), and Windows (Windows Hypervisor Platform), with no persistent state kept inside the microVM.
Key quotes
· 5 pulledDocker Sandboxes use microVMs to isolate containers.
A microVM is a virtual machine that runs on the host operating system's native hypervisor for isolation.
The microVM design targets workloads that start quickly, tear down quickly, and use limited system resources.
Each container gets its own isolated Docker daemon instance and its own kernel.
No persistent state is kept in the microVM.
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