Spring Boot in subdomain

Hi,
I would like deploy simple Vaadin + Spring Boot app. App should be deploy under www.mypage/apps/settings/. I got the first page, but vaadinServlet is loaded from adderss http://www.mypage.com/vaadinServlet/UIDL/?v-uiId=0 and i got an error. The static resources are loaded successfully.

Next step was the usage of paramether :
-Dvaadin.servlet.urlMapping=/apps/settings/

But now I get empy page with the following message :
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

I also try adding paramether resources :
-Dvaadin.servlet.urlMapping=/apps/settings/ -Dvaadin.servlet.resources=/apps/settings/

But without success - error is the some.

I’m using Nginx as frontpage with the following config :

    location /apps/settings/ {
                    client_max_body_size    50M;
                    proxy_read_timeout 600;
                    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                    proxy_set_header  X-Real-IP  $remote_addr;
                    proxy_set_header Host $http_host;
                    proxy_redirect off;

                    proxy_pass http://127.0.0.1:8085/;
                    proxy_redirect  http://127.0.0.1:8085/ http://127.0.0.1/;
     }

This are some resource I have already investigate :
https://github.com/vaadin/spring/blob/master/vaadin-spring-boot/src/main/java/com/vaadin/spring/boot/internal/VaadinServletConfigurationProperties.java
https://github.com/vaadin/spring/issues/70
https://stackoverflow.com/questions/44487416/how-can-i-change-the-vaadin-page-url-in-spring-boot

Thank you for help,
Regards Matic

Hi,
Just to add - If I deploy this app on Tomcat 8 server without any Vaadin servlet specific config, application will work.

See answer in https://vaadin.com/forum/thread/16949142/spring-boot-change-serviceurl-paramether