In the old days of software development, getting an application from code to production was slow and painful. Developers struggled with dependency hell as test and production environments differ in subtle ways, leading to code mysteriously working on one environment but not the other. Then along came Docker in 2013, originally created within dotCloud as an experiment with container technology to simplify deployment. Docker was open-sourced that March, and over the next 15 months it emerged as a leading container platform.

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Docker is a container platform that simplifies deployment of applications in the cloud. It was created in 2013 and uses lightweight containerization to achieve isolation. Docker images are different from virtual machines as they share the host operating system kernel, making them more lightweight and portable. Kubernetes is not necessary to use Docker effectively.

A Crash Course in Docker

Tracing the Path from Bare Metal to Docker

<p>It was an interesting post until I hit the “sign in for a 7 day trial” bit.</p>
