I rolled out Dockge the other week, and it’s solid. It can handle environment variables, but lacks other portainer features like controlling networks, volumes, building images, etc.
One big plus is that Dockge works really well with the dockcheck.sh script for updates, where as Portainer breaks that script.
It doesn’t even need to appeal to you the user, but given the AI Gold Rush, they would have very unhappy investors if they did not.