Claude Code Container Provides Zero-Config Docker Isolation for Claude Code

Claude Code Container (ccc) is a free, open-source tool that provides zero-configuration Docker isolation for Claude Code. It was built using Claude Code itself and addresses security concerns with Claude Code's --dangerouslySkipPermissions flag, which has caused issues like deleted home directories, wiped database files, and unauthorized reading of sensitive files.

Installation and Basic Usage

Installation requires a single command: npm install -g claude-code-container. After installation, you can use ccc as a drop-in replacement for claude-code.

Key Features

• Creates per-project containers named by path hash, ensuring --continue and --resume work correctly
• Automatically forwards host environment variables, locale, and timezone
• Mounts SSH keys and SSH agent (git push works without additional setup)
• Provides transparent localhost proxy so Claude can reach host's dev servers at localhost:3000, :8080, etc. from inside the container
• Maintains clipboard functionality in Claude sessions, including image support
• Includes mise integration for per-project Node/Python/Java/Go versions
• Containers auto-stop when the last session exits
• Pre-configured Chromium + chrome-devtools MCP: Claude can open browsers, navigate pages, take screenshots, run JavaScript, and interact with web apps autonomously

Technical Implementation

The transparent localhost proxy uses iptables on Linux and a userspace proxy on macOS/Windows (since Docker Desktop doesn't support --network host), with automatic fallback to host.docker.internal.

Problem It Solves

The tool addresses limitations of existing approaches: Dockerfile per project requires infrastructure maintenance, devcontainers have complex configuration and slow setup, and manual docker run breaks environment variable forwarding, SSH key availability, clipboard functionality, and localhost access.