fix(cli): better error message when docker missing

[JanPokorny]

Summary

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[gemini-code-assist]

Summary of Changes

Hello @JanPokorny, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the local agent build process by removing an unnecessary preliminary check for Docker's presence. The change aims to streamline error reporting, ensuring that users receive more accurate and direct feedback when Docker is unavailable, rather than a generic "Checking docker" message followed by a less informative failure.

Highlights

• Docker Check Removal: The explicit await run_command(["which", "docker"], "Checking docker") call has been removed from the client_side_build function. This change is intended to prevent a potentially misleading "Checking docker" message and allow subsequent Docker commands to fail more gracefully, providing a clearer error message when Docker is not found.

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Changelog

• apps/agentstack-cli/src/agentstack_cli/commands/build.py
  • Removed the await run_command(["which", "docker"], "Checking docker") line from the client_side_build function.

Activity

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[gemini-code-assist]

Code Review

This pull request improves the error handling for when Docker is not installed. By removing the explicit which docker check, the code now relies on the subsequent docker build command to fail if the Docker executable is not found. The run_command utility already handles the resulting FileNotFoundError gracefully, providing a clear and user-friendly error message. This change not only simplifies the code but also enhances portability, as which is not universally available across all operating systems. This is a solid improvement.