Code-Server can be installed in an Ubuntu Server container on Proxmox using the install script listed in the Code-Server docs. The script prints instructions for starting Code-Server and running it as a systemd service on startup. The installation should be run as the user you would eventually like to use code-server as (not as root). Note that the user's shell might have to be changed from /bin/sh to /bin/bash.

After install, the password for code-server can be found in ~/.config/code-server/config.yaml. The bind address should also be set to 0.0.0.0:8080 so that the interface is accessible remotely, and not just via localhost. The contents of the file should be:

bind-addr: 0.0.0.0:8080
auth: password
password: <password>
cert: false

Spell check can be installed into Code-Server by clicking on the hamburger menu (3 lines) in the top left and then File > Preferences > Extensions. Search for Code Spell Checker and install.

These can be hidden in the UI by clicking on the hamburger menu (3 lines) in the top left and then File > Preferences > Settings. Search for Files:Exclude and add patterns. Examples include:

**/.*
**/gems

Update by re-running the install script as the user (not root):

$ curl -fsSL https://code-server.dev/install.sh | sh

Then reboot the container or restart the service.