Docker has always used microVMs (well since 2016)

A blog post by Dave Cheney, a former Docker engineer, reveals that Docker has been using microVMs since 2016. Docker's underlying technology has been based on runc and runC, which are designed to manage and run containers. However, Docker's own tech stack has included microVMs since 2016, allowing it to run containers in a more isolated environment. The post clarifies that Docker's use of microVMs is not a new development, but rather a long-standing feature.