Building Smaller Container Images
summary
Uses multi-stage Docker builds and dnf install into an empty installroot, disabling weak deps and docs, plus targeted package swaps, to shrink images — an nginx demo drops about 216 MB after switching to smaller libs and options. A dependency analyzer (rpm-show) drives which packages to change; choosing glibc-minimal and other minimal alternatives trims the tree. Resulting Red Hat images include a UBI Micro 38 MB / 13 MB (compressed) build; runtime behavior depends mainly on glibc, kernel and OpenSSL, not the packaging.
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chapters (4)
- 0:00Start
- 0:02Building Smaller Container Images
- 13:24Building Smaller Images
- 18:45Minimizing Dependencies
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