steps to set up KasmVNC and noVNC on Ubuntu 20.04:

1. Update your system:

   sudo apt-get update
   sudo apt-get upgrade
   

2. Install Docker:

   sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
   sudo apt-get update
   sudo apt-get install docker-ce
   

3. Install Docker Compose:

   sudo curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
   sudo chmod +x /usr/local/bin/docker-compose
   

4. Clone the KasmVNC repository:

   git clone https://github.com/kasmtech/KasmVNC.git
   

5. Navigate to the KasmVNC directory and start the server:

   cd KasmVNC
   sudo docker-compose up -d
   

Now, you should be able to access your KasmVNC server at http://your-server-ip:6901/vnc.html?host=your-server-ip&port=6901.

Note: This setup doesn't involve noVNC directly because KasmVNC already provides a web-based VNC client. For a production environment, it's recommended to set up an SSL/TLS reverse proxy (e.g., using Nginx or Apache) to secure the connection to your KasmVNC server.