How to Improve Your Image Builds Using Advance Docker Build
summary
BuildKit replaces the legacy docker build with features that cut time and leak risk: set DOCKER_BUILDKIT=1 to enable parallel multi‑stage builds that drop a 28s demo build to ~12s by running independent stages concurrently; use --secret mounts and tmpfs to avoid baking credentials into images and forward SSH with mount=type=ssh to use the local ssh‑agent without copying keys; persist dependency caches with mount=type=cache (e.g., node_modules); use buildctl (or buildctl daemonless) and export cache inline to share cache via a registry.
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chapters (11)
- 0:00Introduction
- 0:44What is BuildKit
- 2:07Multi-stage build benefits
- 3:56Concurrency demo
- 6:12Cache management
- 9:40Handling secrets
- 12:36Using SSH agents
- 15:51Persistent cache
- 18:20BuildKit without Docker
- 20:29Demo: Daemonless BuildKit
- 24:58Conclusion and resources
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