Permanent User-Agent for specific Container

[ACH1980]

I'd like to have an option where you can set a User Agent for an container permanent. For example, I've the Container chrome which is only to be used with Chrome User-Agent because it's better for the Anti-Cheat of a specific online game, which works almost perfect, but when I close the browser and open it again I must set it again, which is kinda annoying...