Assuming your containers are services, you should be able to go to the client container and click on “Edit”. In the edit screen, you’ll be able to add additional links. Upon saving, you’ll need to do a refresh of the browser to see the links, but the new
link from the client service to the new server service will have already been created. There will be no impact with your current server container.
The only caveat would be that if you are using environment variables. The services dependent on environment variables need to be linked before they are created.