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Daniel Raniz Raneland

Daniel Raniz Raneland

Senior Principal Architect

factor10

AT A GLANCE

Role

Senior Principal Architect

Organisation

factor10

Category

Community

ABOUT THE SPEAKER

Raniz is a programmer, architect, speaker and coach at factor10. He is a problem solver who keeps track of the bigger picture. He is prestigeless, likes to get into new domains, and loves sharing knowledge and ideas. Raniz has worked with system- and software architecture at several companies since 2010 and has been with factor10 since 2021. When not working, he's into beer brewing, sourdough bread, 3D printing and triathlons.

TALK

Scratch that: working with minimal container images

Container images can be described as an operating system in a bottle. They run under the host Linux kernel, but often contain numerous libraries, utilities, and programs alongside the software you put in them.

As an example, the “stable” Debian base image (as of 2025-09-29) contains 111 packages, takes up slightly over 50 MiB of space and lists 21 vulnerabilities.

The “latest” Alpine base image, on the other hand, only has 20 packages, takes up less than 4 MiB of space and lists 2 vulnerabilities.

In this talk, I’ll discuss what makes up a container image, a bit about how they work, and the benefits and drawbacks of these two images (and others, such as Red Hat’s UBI images). I’ll also talk about scratch images—what they are, when you might use them, and some caveats.

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© 2026 code.talks · alphalist GmbH · Hamburg

Let’s connect on LinkedIn.

Speakers, program drops and much more of the community.

A 2-day sweet spot conference for the entire dev team to stay future-proof in the age of AI.

© 2026 code.talks · alphalist GmbH · Hamburg