[BUG] devcontainer doesnt allow for screenshots to be attached

Environment

• Platform (select one):
• [x] Anthropic API
• Claude CLI version: <!-- output of claude --version --> 1.0.95 (Claude Code)
• Operating System: macOS 13.2.1 (22D68)
• Terminal: Cursor Terminal

Bug Description

Running claude code within a Dev Container with the Dev Containers extension on cursor fails to attach screenshots. Attaching screenshots works fine without using a dev container.

Steps to Reproduce

1. Open dev container folder in cursor
2. Start claude code, in my case claude --dangerously-skip-permissions
3. Take a screenshot and paste from clipboard to claude code, image is not attached. I tried pasting a screenshot without the dev container sandbox and it attaches fine.

Expected Behavior

Image is attached to claude code

Actual Behavior

Nothing happens.