Gentoo as a Docker Build System?
summary
Claim: use Gentoo to compile a custom PHP image and then squash it down with Docker multi-stage builds to a practical size. Process uses Gentoo emerge and the Portage tree, compiles for ~20–25 minutes, hits hidden build deps and requires compiling some bits twice, pulls in libs like libpng libjpeg and timezone data. Starting images near 1.3–1.5 GB shrink to about 112 megabytes then to ~72 megabytes and with Kuebler as low as 65 MB.
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chapters (6)
- 0:00Start
- 0:36A EXOSCAL
- 1:59Can you use Gentoo as a Docker build system?
- 16:16Multi-stage builds get rid the previous Docker layers
- 19:41Debugging minimalistic containers
- 21:35Use separate debug containers to fix issues
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