Open Source Summit Europe 2022

Bring-your-own-container models are widely supported on today’s modern compute platforms. In other words, users can provide their own container images within their custom software environment. However, user-provided containers must satisfy each platform's unique requirements–which can vary from platform to platform. For example, you may need to: • Use a specific non-root user. • Place the home directory in a certain location. • Install dependency packages. • Run web applications on designated ports. Keeping your container images conformant with these arbitrary requirements can be challenging. As a result, Jacob is introducing a new open-source tool called Container Canary to capture these requirements and automatically test against them. In other words, Container Canary provides a specification for recording these requirements as a manifest that can be checked into version control. You can then use the canary CLI tool to validate containers against that manifest.