swap around what we're building for docker

[winglian]

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Summary by CodeRabbit

• Chores
  • Added Python 3.12 support to build and test configurations.
  • Expanded platform matrices for additional Linux architectures (amd64, arm64).
  • Updated CI/CD pipeline strategy settings to adjust test execution behavior.

[coderabbitai]

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Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 59c35a18-340c-4168-8c4d-35511411993b

📥 Commits

Reviewing files that changed from the base of the PR and between fccc712 and 1cbd9b9.

📒 Files selected for processing (1)

• .github/workflows/main.yml

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📝 Walkthrough

Walkthrough

Modified .github/workflows/main.yml to add fail-fast: false to multiple workflow job strategy blocks, expanded platform matrices with explicit entries (linux/amd64, linux/arm64), introduced Python 3.12 configurations for specific CUDA/PyTorch combinations, and adjusted matrix field ordering.

Changes

Cohort / File(s)	Summary
GitHub Actions Workflow Configuration .github/workflows/main.yml	Added fail-fast: false to strategy blocks; expanded platform matrix with explicit platform entries; introduced Python 3.12 matrix entries for specific CUDA/PyTorch combinations; removed older mixed entries; reordered matrix fields.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• add uv axolotl builds #3431: Modifies the same workflow file's job matrices with platform and Python/CUDA entry adjustments.
• build docker images for 2.9.x #3273: Updates .github/workflows/main.yml matrix entries, including PyTorch and Python configuration variants.
• build axolotl images with torch 2.10.0 #3430: Adjusts the same workflow file with platform and Python 3.12/CUDA/PyTorch matrix entries.

Suggested reviewers

• SalmanMohammadi

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch no-uv-cloud-base

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