What happens when you put your app in a Docker container
Docker container vs virtual machine: what is really different underneath
Many people call a Docker container a small virtual machine. From outside, the two look the same. Inside, they are built in very different ways. You see the difference the moment you start one.
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Put a container and a virtual machine side by side on one server. Each gives an app a space of its own, and from outside, they look the same.
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Yet fill two servers of the same size, one with each kind, and many more containers fit than virtual machines. What does a virtual machine carry that a container does not?
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