GH-2436: fix(docker): pin claude-code to 2.1.123 + use NodeSource Node 20

[alekspetrov]

Summary

Automated PR created by Pilot for task GH-2436.

Closes #2436

Changes

GitHub Issue #2436: fix(docker): pin claude-code to 2.1.123 + use NodeSource Node 20

v2.101.0 Docker build failed (run 24992556558) because Dockerfile:51 installs nodejs from Ubuntu jammy apt (Node v12.22.9), but @anthropic-ai/claude-code requires Node ≥18. Optional chaining in install.cjs throws SyntaxError: Unexpected token '.' on Node 12.

Two coupled changes in Dockerfile

1. Replace apt-installed nodejs with NodeSource Node 20 LTS

• Drop nodejs and npm from the existing apt-get install block (line 51-52)
• Before npm install -g, add NodeSource setup:

  curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
  apt-get install -y --no-install-recommends nodejs
  

  (NodeSource bundles a current npm, no separate npm package needed)

2. Pin claude-code version

• Change line 53: npm install -g @anthropic-ai/claude-code
• To: npm install -g @anthropic-ai/[email protected]

Verification

• docker build -t pilot:test . succeeds locally
• docker run --rm pilot:test claude --version prints 2.1.123 (Claude Code)
• After merge, retag or re-run the Docker workflow to publish the v2.101.x image

Out of scope

• Doc snippets under docs/content/** (user-facing examples, leave unpinned)
• Helm chart (no Node baked in)

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