Improve build cacheability.

[adam-vessey]

Summary by CodeRabbit

• Refactor
  • Improved Docker image build process with a multi-stage approach for better efficiency and flexibility.
  • ActiveMQ version, user, and group IDs are now configurable during the build.
  • Enhanced clarity and maintainability of the Dockerfile without affecting runtime behavior.

[coderabbitai]

Walkthrough

The Dockerfile was refactored to implement a multi-stage build process. The new approach introduces a dedicated stage for downloading the ActiveMQ binary, utilizes build arguments for customization, streamlines extraction and ownership steps, and clarifies user/group creation. No changes were made to exported or public code entities.

Changes

File(s)	Change Summary
Dockerfile	Refactored to use multi-stage build, added build arguments, separated binary acquisition, improved extraction and ownership logic, and clarified user/group creation.

Poem

In Docker’s warren, layers anew,
With multi-stage hops, our build process grew.
Binaries fetched, with ownership set,
Arguments guide where our ActiveMQ’s met.
Rabbits rejoice, the image is clean—
Streamlined and nimble, the best ever seen!
🐇✨

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📥 Commits

Reviewing files that changed from the base of the PR and between 42f8783 and a717cef.

📒 Files selected for processing (1)

• Dockerfile (2 hunks)

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