nginx.conf

worker_processes 1;

events { worker_connections 1024; }

http {

    sendfile on;

    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    upstream auth {
        server battleship_auth:3333;
    }

    upstream game {
        server battleship_game:4444;
    }

    upstream updater {
        server battleship_updater:5555;
    }

    # HTTP — redirect all traffic to HTTPS
    server {
        listen 80;
        listen [::]:80 default_server ipv6only=on;
        return 301 https://$host$request_uri;
    }

    server {
        listen 9999;

        location /api/auth/ {
            proxy_pass         http://auth/;
            proxy_redirect     off;
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   X-Forwarded-Host $server_name;
        }

        location /api/game/ {
            proxy_pass         http://game/;
            proxy_redirect     off;
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   X-Forwarded-Host $server_name;
        }

        location /api/updater/ws {
            proxy_pass         http://updater/ws/;
            proxy_http_version 1.1;
            proxy_set_header   Upgrade $http_upgrade;
            proxy_set_header   Connection $connection_upgrade;
            proxy_set_header   Host $host;
        }

        location /api/updater/update {
            proxy_pass         http://updater/update/;
            proxy_redirect     off;
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   X-Forwarded-Host $server_name;
        }
    }
}