Developer Adapts Multi-Stage Docker Builds to Work Around Legacy v1.29 Constraints

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A developer faced compatibility challenges while standardizing Docker builds across nine microservices — including auth, booking, and payment — using legacy Docker v1.29.2. The older daemon lacked BuildKit support, meaning modern caching flags failed and all build stages were processed sequentially rather than selectively. Without root access to upgrade the Docker engine, upgrading the environment was not an option. The team resolved the issue by reordering Dockerfile.base so JVM runtime stages appeared before heavier GraalVM compilation steps, preventing unnecessary processing. Explicit build targets were also declared in docker-compose.yml to force the legacy engine to stop cleanly at the required JVM stage.

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