[https://nvbugs/5563653][infra] reduce docker image layers

[ZhanruiSunCh]

Summary by CodeRabbit

• Refactor

  • Consolidated installation steps across development and Triton images to reduce layers and simplify build stages.
  • Unified script handling improves consistency and maintainability without altering behavior.

• Chores

  • Reduced Docker image layers for smaller images and potentially faster builds and pulls.
  • Streamlined build process improves reliability across stages with consistent script availability.
  • No functional changes to runtime features; installations continue to be applied as before.

Description

Test Coverage

PR Checklist

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[coderabbitai]

📝 Walkthrough

Walkthrough

Consolidates multiple COPY steps in docker/Dockerfile.multi into bulk COPY operations within devel and triton stages, while retaining the same install.sh-driven RUN commands. Per-script COPYs for base, cmake, ccache, CUDA toolkit, TensorRT, Polygraphy, mpi4py, PyTorch, Triton, UCX, NIXL, and etcd are removed/replaced by the bulk approach.

Changes

Cohort / File(s)	Summary
Devel stage script consolidation docker/Dockerfile.multi	Replaced many per-script COPYs with a single bulk COPY for install.sh and related installers (base, cmake, ccache, cuda_toolkit, tensorrt, polygraphy, mpi4py, pytorch). RUN steps continue invoking install.sh with arguments; layer count reduced.
Triton stage consolidation docker/Dockerfile.multi	Replaced individual COPYs with one bulk COPY for Triton-related installers (install_triton.sh, install_ucx.sh, install_nixl.sh, install_etcd.sh). Unified RUN to execute install_triton.sh; removed scattered per-script COPYs.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant Builder
  participant Devel as Devel Stage
  participant Triton as Triton Stage
  participant Scripts as Install Scripts

  rect rgb(235, 245, 255)
  note over Devel: Bulk COPY pattern
  Builder->>Devel: COPY install.sh + install_*.sh (base, cmake, ccache, cuda, tensorrt, polygraphy, mpi4py, pytorch)
  Devel->>Scripts: RUN ./install.sh base|cmake|ccache|cuda|tensorrt|polygraphy|mpi4py|pytorch
  end

  rect rgb(240, 250, 240)
  note over Triton: Bulk COPY pattern
  Builder->>Triton: COPY install_triton.sh + install_ucx.sh + install_nixl.sh + install_etcd.sh
  Triton->>Scripts: RUN ./install_triton.sh
  end

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description Check	⚠️ Warning	The pull request description consists mostly of the unmodified template and lacks a concrete title, filled‐in “## Description” and “## Test Coverage” sections, and does not indicate which checklist items apply or are completed, so it does not satisfy the repository’s required PR description structure.	Please replace the template placeholders with a proper title following the ticket/type format, provide a concise description of the issue and solution under “## Description,” list relevant tests under “## Test Coverage,” and mark or annotate each PR Checklist item to show that it has been reviewed and addressed.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title “[https://nvbugs/5563653][infra] reduce docker image layers” succinctly follows the repository’s tagging convention and accurately captures the primary change of consolidating Docker COPY steps to reduce image layers. It clearly reflects the main objective of the pull request without extraneous details.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

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• Post copyable unit tests in a comment

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[ZhanruiSunCh]

target release/1.1 #8250