Goal to optimize a container image
Goal to optimize a container image
Faster build
Smaller image
More secure contents
Easier to maintain
Container image building
How do you build your container image?
In the beginning, there was Docker
But more great tools exist…
Focus on Docker/BuildKit
Strong focus on Developer Experience (DX)
Many innnovations in the last few years
Overview
Multi-stage build
FROM scratch
Order of commands
BuildKit RUN cache
Heredocs
USER
Parallel multi-stage build
Dependency update, e.g. RenovateBot
Patch/digest auto-merge
Automated build
Cache From
Testing
Scan
Scheduled rebuild
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More
BuildKit RUN mount
Base and derived images
LABEL
Job dependencies
CI caching
CI only certain file changes
Remote tagging
Readability beats size