Private Server C9 [INSTANT]

All can be self‑hosted with Docker and offer LSP, debuggers, and Git integration out of the box. The legacy Cloud9 private server is a hidden gem for ultra‑lightweight, ephemeral, or offline development. Its small memory footprint (~80 MB idle) and real‑time terminal make it ideal for IoT device coding, secure facility workstations, or teaching programming on low‑cost Chromebooks.

EXPOSE 8181 CMD ["node", "/c9/server.js", "-p", "8181", "-l", "0.0.0.0", "-w", "/workspace", "-a", "$USERNAME:$PASSWORD_HASH"] private server c9

| Component | Technology | Role | | ----------------- | ------------------------ | -------------------------------------------------------------------- | | | HTML5, JavaScript, Ace | Browser-based editor UI, file tree, terminal emulator. | | WebSocket server | Node.js (Express + Socket.IO) | Handles real‑time collaboration, file watching, terminal I/O. | | Backend bridge | c9/inspector (Node.js) | Spawns child processes (shell, linters, debuggers). | | Project runtime | Docker (optional) | Isolated workspace per user (recommended for security). | All can be self‑hosted with Docker and offer