Nginx reverse proxy to ESPurna, dynamically based on hostname

location ~ /home/(.*)/ws {
    	resolver 10.0.1.5;
	proxy_http_version 1.1;
	proxy_set_header Upgrade $http_upgrade;
	proxy_set_header Connection "upgrade";
	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_set_header        X-Forwarded-Proto $scheme;
	proxy_redirect off;
	proxy_pass http://$1/ws;
	proxy_read_timeout  36000s;
}

location ~ /home/(.*)/ {
	resolver 10.0.1.5;
	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_set_header        X-Forwarded-Proto $scheme;
	proxy_pass http://$1/;
	proxy_read_timeout  36000s;
}