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Linux Container

Not a VM but an ordinary Linux process wrapped in namespaces for isolation of what it can see and cgroups for limits on what it can consume, sharing the host kernel. Container 'boot' is just process start, which is why containers launch in milliseconds.

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How Linux cgroups Namespaces and Union File Systems Isolate a Container

A container is not a virtual machine but an ordinary set of host processes made to appear self-contained by three independent kernel mechanisms: namespaces, which partition the kernel's global identi…