Building with Buildkit
summary
Monolithic Rails app image with Ruby gems, yarn/webpack and Debian packages moves from a naive Dockerfile rebuild model taking 11 minutes 09 seconds to a parallelized BuildKit pipeline at 7 minutes 41 seconds, a ~3.5 minute saving measured on Buildkite. Multistage builds expose dependency graph and BuildKit runs stages in parallel; adding cache mounts preserves bundler and node caches so a single gem bump becomes over a minute faster on subsequent builds.
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chapters (4)
- 0:00Building a monolith
- 1:45Understanding BuildKit
- 2:16BuildKit parallelization
- 3:52Cache mount optimization
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