Is your feature request related to a problem? Please describe
I'm currently running in an environment which disables by default running on port 80, yes even if the port is exposed in a container (relates to some internal functionality), I've discovered that the only way to set it up is by changing the config.yaml -> server.http.addr port value.
Describe the solution you'd like
I would love to just have a field that allowed me to set the site port in the installation steps.
Describe alternatives you've considered
The alternative would be editing manually the config.yaml file which isn't that bad but adding it in the installation steps could be nicer.
Notes
I'm more than willing to write a PR to add that functionality :)