Faster builds and slimmer images with Docker multistage builds
summary
Shows a concrete Dockerfile that replaces copying an external build with a single multi-stage pipeline that runs yarn install and produces gzip-compressed static files served by nginx, with measured runs hitting ~107 seconds the first time. Demonstrates using yarn cache mount and npm cache mount to cut repeated downloads, inspects layers with docker history (images grew from ~227MB to ~315MB without cache), uses cache-from/inline cache to make a Docker registry act as a distributed build cache, and parallelizes independent stages.
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chapters (10)
- 0:00Introduction
- 1:52Inspecting Docker images
- 11:33Single-stage to multi-stage
- 16:22Private npm repositories
- 24:00Optimizing build cache
- 29:46Avoiding cache busting
- 33:50Distributed build caches
- 41:11Caching from multiple tags
- 43:42Parallelizing build steps
- 47:46Q&A
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