Any interest in dropping dependency on "dockerize"

Is your feature request related to a problem? Please describe.

I noticed that start-server-ui.sh uses dockerize for templating this file.

This isn't a problem per se, but it does add ~6MB to your image size to do some fairly mundane template rendering.

Describe the solution you'd like

Looking at the template, I see that it uses default and split functions, which are not particularly complicated. This seems like something that could be implemented in the fs_config_loader directly rather than via packaging an additional binary in the docker image.

Would there be any interest in a PR that does something like this? Either through a separate subcommand of ui-server or via a flag?

Describe alternatives you've considered

Do nothing.

Additional context

Start with server/docker/start-ui-server.sh and server/docker/config-template.yaml to understand how dockerize currently renders the configuration. Then inspect the fs_config_loader and ui-server entry points mentioned in the issue. Done means the template still supports the default and split functions without packaging dockerize in the image; verify the resulting Docker image and configuration behavior.