Config NGINX as proxy for local and remote websites

Question

I got three web servers:

app1 - on local server with nginx. this app listens 127.0.0.1:8080

app2 - on 10.7.0.2:80

app3 - on 10.7.0.10:80

I wan to config NGINX to proxy this three apps on same domain, but different paths:

app1 - https://my.domain.com/something/

app2 - https://my.domain.com/

app3 - https://my.domain.com/nothing/

I have wildcard SSL certificate for *.domain.com

Here is my config:

upstream app2 {
    server 10.7.0.2:80;
}

upstream app3 {
    server 10.7.0.3:80;
}

server {
    listen                 0.0.0.0:80;
    server_name            my.domain.com;
    server_tokens          off;
    return                 301 https://$host$request_uri;
}

server {
    listen                 443 ssl;
    server_name            my.domain.com;
    access_log             logs/my.domain.com main;

    ssl_certificate        /etc/nginx/certs/my.domain.com/cert.txt;
    ssl_certificate_key    /etc/nginx/certs/my.domain.com/private.txt;

    location /something {
        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_pass         http://127.0.0.1:8080/;
        include            proxy_params;
    }

    location / {
        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_pass         http://app2;
        include            proxy_params;
    }

    location /nothing {
        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_pass         http://app3;
        include            proxy_params;
    }
}

But this config works good only for app2.

When i'm trying to open https://my.domain.com/something/ I see this in browser console:

GET https://my.domain.com/styles.css [HTTP/1.1 404 Not Found 265ms]
GET https://my.domain.com/static/js/main.f726536f.js [HTTP/1.1 404 Not Found 432ms]
GET https://my.domain.com/static/css/main.967cebd1.css [HTTP/1.1 404 Not Found 432ms]
Loading failed for the <script> with source “https://my.domain.com/static/js/main.f726536f.js”.

Whats wrong?