proxy.conf

upstream rgts {
    server unix:/var/run/app0.sock;
    server unix:/var/run/app1.sock;
}

server {
    listen       80;
    server_name $nginx_rgts_host *.$nginx_rgts_host;
    root /app/public;

    try_files $uri/index.html $uri @rgts;

    location @rgts {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header        X-Forwarded-Proto $http_x_forwarded_proto;

        proxy_pass http://rgts;
    }

    client_max_body_size 4G;
    keepalive_timeout 10;
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location ~ ^/(assets)/  {
        expires max;
        add_header Cache-Control public;
    }
}