Fundamentally, all major software, even open source, was designed before image-based containers. This means that putting software inside of containers is fundamentally a platform migration. This also means that some programs are easy to migrate into containers, while others are more difficult.
I started working with image-based containers nearly 3.5 years ago. In this time I have containerized a ton of applications. I have learned what’s real, and what is superstition. Today, I’d like to give a brief introduction to how Linux containers are designed and talk briefly about image signing.
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