Problem

When running Claude Code inside the vibekit Docker sandbox, it crashes or outputs errors due to missing system dependencies:

1. File editing fails - Claude Code needs a text editor but none is installed, causing edit operations to fail
2. Diagnostic failures - Claude Code uses ps command for diagnostics, but procps package is missing
3. MCP servers won't run - Many MCP servers are Node.js-based and can't start because Node.js isn't in the container
4. Configuration errors - Claude Code has issues writing to /root/.claude when the directory doesn't exist

These aren't just inconveniences - they cause Claude Code to crash or produce errors that break the workflow.

Proposed solution

Add these system dependencies to packages/cli/Dockerfile:

• procps - provides ps command used by Claude Code for diagnostics
• neovim - text editor for file operations
• Node.js LTS - runtime for MCP servers
• Pre-create /root/.claude directory

Questions for maintainers

1. Editor choice: Should we hardcode neovim, or provide a way for users to configure their preferred editor (vim, nano, etc.)? If configurable, where should this setting live?

2. Scope: These dependencies would be added to the main CLI Dockerfile. Is this the right approach, or should there be a different strategy for tool-specific requirements?

Impact

Total image size increase is around 60-65MB. This makes Claude Code fully functional in the sandbox without crashes.