What's New in Docker Build
summary
Covers concrete BuildKit and buildx features you can start using: multi-line shell heredocs in Dockerfiles, stable build mounts (bind, cache, secrets/SSH) that speed incremental builds, and GitHub Actions remote cache cutting an example build from 9s to 3s (~67% faster). Introduces copy --link behavior to avoid invalidating subsequent layers, metadata export for build provenance, named build contexts and buildx bake for multi-Dockerfile pipelines, plus OpenTelemetry tracing and improved error source maps.
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chapters (16)
- 0:00Intro
- 0:38Build repositories
- 3:52A Dockerfile in the wild
- 4:49Using Here-Docs (2/2)
- 5:58Go further with Here-Docs
- 6:31Build mounts
- 7:08Build mount types
- 9:42Docker GitHub Actions
- 10:09Basic workflow
- 11:21Set GitHub Cache Backend
- 18:03Key points
- 18:34Build info structure
- 19:24Pushing metadata
- 20:45What is build context?
- 25:52OpenTelemetry in Buildx
- 26:23Better errors support
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