support 3rd party vendor and fix local can only used in function warning

[shen390s]

• Add support 3rd party vendor, by set ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN in environment
• Fix shell warning, local keyword just can used in function in file build/docker-entrypoint line 106

Rongsong

Summary by Sourcery

Add environment configuration for Anthropic third-party vendor support in the Claudebox Docker container and adjust exported shell functions in the Docker helper script.

New Features:

• Pass ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN environment variables into the Claudebox Docker container to support third-party Anthropic-compatible vendors.

Enhancements:

• Refine the list of exported shell functions in lib/docker.sh to align with current usage.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR updates the Docker tooling to pass through optional Anthropic vendor configuration into the Claudebox container and fixes a shell warning by adjusting how shell-local declarations are used in the docker entrypoint script.

File-Level Changes

Change	Details	Files
Pass Anthropic 3rd‑party vendor configuration into the Claudebox Docker container as environment variables.	Extend run_claudebox_container docker_args array to include ANTHROPIC_BASE_URL with a default of empty string Extend run_claudebox_container docker_args array to include ANTHROPIC_AUTH_TOKEN with a default of empty string	lib/docker.sh
Fix shell "local" usage warning in Docker entrypoint script.	Adjust variable declaration or placement around line 106 to ensure local is only used inside shell functions (exact change not visible in provided diff)	build/docker-entrypoint

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[sourcery-ai]

Hey - I've left some high level feedback:

• When propagating ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN into docker_args, consider only adding the -e entries when the variables are actually set to avoid explicitly overriding any image defaults with empty values.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- When propagating ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN into docker_args, consider only adding the -e entries when the variables are actually set to avoid explicitly overriding any image defaults with empty values.

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