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computer/libs/kasm/README.md
2025-10-22 11:35:31 -07:00

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# CUA Ubuntu Container
Containerized virtual desktop for Computer-Using Agents (CUA). Utilizes Kasm's MIT-licensed Ubuntu XFCE container as a base with computer-server pre-installed.
## Features
- Ubuntu 22.04 (Jammy) with XFCE desktop environment
- Pre-installed computer-server for remote computer control
- VNC access for visual desktop interaction
- Python 3.11 with necessary libraries
- Screen capture tools (gnome-screenshot, wmctrl, ffmpeg)
- Clipboard utilities (xclip, socat)
## Usage
### Build and Push (multi-arch)
Use Docker Buildx to build and push a multi-architecture image for both `linux/amd64` and `linux/arm64` in a single command. Replace `trycua` with your Docker Hub username or your registry namespace as needed.
```bash
# Login to your registry first (Docker Hub shown here)
docker login
# Build and push for amd64 and arm64 in one step
docker buildx build \
--platform linux/amd64,linux/arm64 \
-t trycua/cua-ubuntu:latest \
--push \
.
```
### Running the Container Manually
```bash
docker run --rm -it --shm-size=512m -p 6901:6901 -p 8000:8000 -e VNCOPTIONS=-disableBasicAuth cua-ubuntu:latest
```
- **VNC Access**: Available at `http://localhost:6901`
- **Computer Server API**: Available at `http://localhost:8000`
### Using with CUA Docker Provider
This container is designed to work with the CUA Docker provider for automated container management:
```python
from computer.providers.factory import VMProviderFactory
# Create docker provider
provider = VMProviderFactory.create_provider(
provider_type="docker",
image="cua-ubuntu:latest",
port=8000, # computer-server API port
noVNC_port=6901 # VNC port
)
# Run a container
async with provider:
vm_info = await provider.run_vm(
image="cua-ubuntu:latest",
name="my-cua-container",
run_opts={
"memory": "4GB",
"cpu": 2,
"vnc_port": 6901,
"api_port": 8000
}
)
```
## Container Configuration
### Ports
- **6901**: VNC web interface (noVNC)
- **8080**: Computer-server API endpoint
### Environment Variables
- `VNC_PW`: VNC password (default: "password")
- `DISPLAY`: X11 display (set to ":0")
### Volumes
- `/home/kasm-user/storage`: Persistent storage mount point
- `/home/kasm-user/shared`: Shared folder mount point
## Creating Filesystem Snapshots
You can create a filesystem snapshot of the container at any time:
```bash
docker commit <container_id> cua-ubuntu-snapshot:latest
```
Then run the snapshot:
```bash
docker run --rm -it --shm-size=512m -p 6901:6901 -p 8080:8080 -e VNCOPTIONS=-disableBasicAuth cua-ubuntu-snapshot:latest
```
Memory snapshots are available using the experimental `docker checkpoint` command. [Docker Checkpoint Documentation](https://docs.docker.com/reference/cli/docker/checkpoint/)
## Integration with CUA System
This container integrates seamlessly with the CUA computer provider system:
- **Automatic Management**: Use the Docker provider for lifecycle management
- **Resource Control**: Configure memory, CPU, and storage limits
- **Network Access**: Automatic port mapping and IP detection
- **Storage Persistence**: Mount host directories for persistent data
- **Monitoring**: Real-time container status and health checking