worker_processes auto;

events {
    worker_connections 1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    tcp_nopush      on;
    keepalive_timeout 65;

    gzip              on;
    gzip_vary         on;
    gzip_min_length   1024;
    gzip_proxied      any;
    gzip_types        text/plain text/css text/javascript application/javascript application/json image/svg+xml font/woff2;

    server {
        listen 80;
        listen 3000;
        server_name localhost;

        root /usr/share/nginx/html;
        index index.html;

        # Hashed build output is immutable, so cache it hard.
        location /assets/ {
            add_header Cache-Control "public, max-age=31536000, immutable";
            try_files $uri =404;
        }

        # Never cache the shell: it points at the current hashed assets.
        location = /index.html {
            add_header Cache-Control "no-cache, no-store, must-revalidate";
        }

        # Hand unknown paths to React Router.
        location / {
            try_files $uri $uri/ /index.html;
        }
    }
}