nginx.conf

error_log /dev/stdout info;

events {}

http {
  # https://github.com/jetbrains-infra/docker-nginx-resolver
  include /etc/nginx/includes/resolver.conf;

  # https://www.nginx.com/blog/websocket-nginx/
  map $http_upgrade $connection_upgrade {
      default upgrade;
      '' close;
  }

  upstream rest-api {
      server mango-service-v3:3000;
  }

  upstream ws-api {
      server mango-bowl:8005;
  }

  server {
      access_log /dev/stdout;

      listen 80;

      # https://localhost/api
      location /api/ {
        set $backend_api "http://rest-api/api/";
        if ($request_uri ~* "/api/(.*$)") {
            set $path_remainder $1;
        }
        proxy_pass $backend_api$path_remainder;
      }

      # ws://localhost/ws
      location /ws {
          proxy_pass http://ws-api/v1/ws;
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection $connection_upgrade;
          proxy_set_header Host $host;
      }
  }
}