simple nginx conf

nginx.conf

server {
    listen       80;
    server_name  localhost;
    port_in_redirect off;
    autoindex on;
    add_header Access-Control-Allow-Origin *;
    location / {
        root   /spa;
        try_files $uri $uri/ /index.html;
    }
    # redirect server error pages to the static page /50x.html
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /pwa;
    }
}