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As we mentioned in the blog post, there is zero difference between a `Dockerfile` you execute locally and one that you give to us.

[One of the differences is performance. You'll find that we can build and execute much more quickly :)]

There are many examples here: https://github.com/zeit/now-examples

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> we can build [...] much more quickly

Care to elaborate? Did you write your own container builder (for example like Google did with kaniko) that you use instead of docker? If not, I fail to see how you can build faster than me locally.

So, I'm not running the same docker image, just something somewhat similar built from the same Dockerfile?

> something somewhat similar built from the same Dockerfile?

Yes. We build the container based on the Dockerfile.

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