CLAUDE_CONFIG_DIR not handled

[jandroav]

The Docker MCP Gateway's Claude Code client configuration is not respecting the CLAUDE_CONFIG_DIR environment variable, always defaulting to ~/.claude.json regardless of whether users had set a custom configuration directory.

This breaks multi-profile workflows where users maintain separate Claude Code installations for different contexts (e.g., work vs. personal).

When users clicked the 'Connect' button in the MCP Toolkit UI with CLAUDE_CONFIG_DIR set, the gateway configures the wrong Claude Code installation, causing the MCP servers to be unavailable in the intended profile and potentially exposing them in an unintended one.

I created a PR updating the configuration path resolution to check $CLAUDE_CONFIG_DIR/.claude.json first before falling back to the default location.

PR: #224

[bobbyhouse]

Is CLAUDE_CONFIG_DIR a documented environment variable for Claude Code? I searched through the docs and was unable to find it.

[jandroav]

Is CLAUDE_CONFIG_DIR a documented environment variable for Claude Code? I searched through the docs and was unable to find it.

I am not sure why it is not documented, but for sure it is something available https://github.com/anthropics/claude-code/issues?q=is%3Aissue%20%27CLAUDE_CONFIG_DIR%27

I hope they will add it to the docs as requested here: anthropics/claude-code#6531