From dotCloud to Docker

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Have you heard about dotCloud? If you haven’t, I’m going to give you a hint: it is a PAAS company. Another hint: eventually, dotCloud open-sourced their container engine. That container engine became Docker.

This is a quasi-archeological account of some of the early design decisions of dotCloud, some of which have shaped how Docker is today (and how it is not). “How is this relevant to my interests?” you ask. If you are not using containers, and not planning to, ever, then this article will not be very useful to you. Otherwise, I hope that you can learn a lot from our past successes and failures. At the very least, you will understand why Docker was built this way.

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