**Describe the bug** - When the port used for reverse proxy is not 443 or 80 websockets doesnt works **To Reproduce** Steps to reproduce the behavior: 1. Map another port that 443 or 80 on the host side to the docker container 2. try to connect to a websocket 3. you'll get a 403 error **Expected behavior** Working websocket **Solution** Change code of `include/proxy.conf` to : ``` add_header X-Served-By $http_host; proxy_set_header Host $http_host; proxy_set_header X-Forwarded-Scheme $scheme; proxy_set_header X-Forwarded-Proto $scheme; proxy_set_header X-Forwarded-For $remote_addr; proxy_pass $forward_scheme://$server:$port; ``` $host is changed to $http_host in order to fix that problem