Add linux/amd64 platform support for container builds

[yasun1]

From #14, when building container images on Mac M1/M2/M3 (arm64 architecture), the images will now be explicitly built for linux/amd64 architecture, ensuring they work correctly when deployed to GKE clusters which run on linux/amd64.

Summary by CodeRabbit

• Chores
  • Updated container build configuration to explicitly target Linux platforms, ensuring consistent behavior across different build environments and improving compatibility guidance.

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[coderabbitai]

Walkthrough

The Makefile was updated to add the --platform linux/amd64 flag to the Docker build commands in the image and image-dev targets and to include comments explaining platform requirements and alternatives for older Docker engines. No other build logic, error handling, or exported/public API declarations were changed.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding explicit linux/amd64 platform support to container builds in the Makefile, which aligns with the PR objectives of ensuring M1/M2/M3 Mac builds work correctly on linux/amd64 GKE clusters.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

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• Post copyable unit tests in a comment

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Reviewing files that changed from the base of the PR and between 29cf635 and 09af7ec.

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• Makefile (2 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• Makefile

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[coderabbitai]

Actionable comments posted: 1

🧹 Nitpick comments (2)

Makefile (2)

326-326: Architectural note: Enforces amd64 builds regardless of host platform.

This change prevents native builds on non-amd64 systems (e.g., arm64 hosts will build amd64 images). If the project needs multi-architecture image support in the future, consider adding an environment variable to override the platform, such as DOCKER_PLATFORM ?= linux/amd64.

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49-70: Consider documenting platform enforcement in help text.

The help text describes the image and image-dev targets but doesn't mention that they now build for linux/amd64. Consider adding a note for users, especially if this is a change in behavior.

📜 Review details

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Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 67e2059 and 29cf635.

📒 Files selected for processing (1)

• Makefile (2 hunks)

[ciaranRoche]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ciaranRoche

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