Running Grafana behind a reverse proxy

This is based on instructions from here https://grafana.com/tutorials/run-grafana-behind-a-proxy/

1. Go into the grafana docker container and change the conf/defaults.ini to server grafana in subdomain.

   [server]
   domain = your_url.com
   root_url = %(protocol)s://%(domain)s:%(http_port)s/grafana/
   serve_from_sub_path = true

2. For the nginx configuration please refer to