Added support for multiple Eval Pipeline UIs (#1830)

deployment/docker_compose/docker-compose.search-testing.yml

@@ -179,9 +179,8 @@ services:
       - web_server
     environment:
       - DOMAIN=localhost
-    ports:
-      - "80:80"
-      - "3000:80"  # allow for localhost:3000 usage, since that is the norm
+    ports: 
+      - "${NGINX_PORT:-3000}:80"  # allow for localhost:3000 usage, since that is the norm
     volumes:
       - ../data/nginx:/etc/nginx/conf.d
     logging: